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Finding the Fourth Proportional to 38,574.50, 53,230.29 and 21,575.79

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Solution

The fourth proportional to 38,574.50, 53,230.29 and 21,575.79 is: 29,773.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,574.50 : 53,230.29 = 21,575.79 : x
  2. Step 2: Convert to fraction form
    38,574.50/53,230.29 = 21,575.79/x
  3. Step 3: Cross multiply
    38,574.50x = 53,230.29 × 21,575.79
  4. Step 4: Simplify right side
    38,574.50x = 1,148,485,558.68
  5. Step 5: Solve for x
    x = 1,148,485,558.68/38,574.50
  6. Step 6: Final answer
    x = 29,773.18

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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.