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Finding the Fourth Proportional to 38,090.79, 52,565.40 and 21,323.79

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Solution

The fourth proportional to 38,090.79, 52,565.40 and 21,323.79 is: 29,426.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,090.79 : 52,565.40 = 21,323.79 : x
  2. Step 2: Convert to fraction form
    38,090.79/52,565.40 = 21,323.79/x
  3. Step 3: Cross multiply
    38,090.79x = 52,565.40 × 21,323.79
  4. Step 4: Simplify right side
    38,090.79x = 1,120,893,550.87
  5. Step 5: Solve for x
    x = 1,120,893,550.87/38,090.79
  6. Step 6: Final answer
    x = 29,426.89

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Half scale
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Double scale
Find fourth proportional to 38,091.79, 52,566.78 and 21,324.79
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.