Home / 38,501.22-53,131.10-21,505.74

Finding the Fourth Proportional to 38,501.22, 53,131.10 and 21,505.74

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Solution

The fourth proportional to 38,501.22, 53,131.10 and 21,505.74 is: 29,677.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,501.22 : 53,131.10 = 21,505.74 : x
  2. Step 2: Convert to fraction form
    38,501.22/53,131.10 = 21,505.74/x
  3. Step 3: Cross multiply
    38,501.22x = 53,131.10 × 21,505.74
  4. Step 4: Simplify right side
    38,501.22x = 1,142,623,514.99
  5. Step 5: Solve for x
    x = 1,142,623,514.99/38,501.22
  6. Step 6: Final answer
    x = 29,677.59

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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.