Home / 39,317.52-54,257.40-21,412.74

Finding the Fourth Proportional to 39,317.52, 54,257.40 and 21,412.74

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Solution

The fourth proportional to 39,317.52, 54,257.40 and 21,412.74 is: 29,549.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,317.52 : 54,257.40 = 21,412.74 : x
  2. Step 2: Convert to fraction form
    39,317.52/54,257.40 = 21,412.74/x
  3. Step 3: Cross multiply
    39,317.52x = 54,257.40 × 21,412.74
  4. Step 4: Simplify right side
    39,317.52x = 1,161,799,599.28
  5. Step 5: Solve for x
    x = 1,161,799,599.28/39,317.52
  6. Step 6: Final answer
    x = 29,549.16

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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.