Home / 39,305.07-54,239.28-21,400.14

Finding the Fourth Proportional to 39,305.07, 54,239.28 and 21,400.14

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Solution

The fourth proportional to 39,305.07, 54,239.28 and 21,400.14 is: 29,531.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,305.07 : 54,239.28 = 21,400.14 : x
  2. Step 2: Convert to fraction form
    39,305.07/54,239.28 = 21,400.14/x
  3. Step 3: Cross multiply
    39,305.07x = 54,239.28 × 21,400.14
  4. Step 4: Simplify right side
    39,305.07x = 1,160,728,185.50
  5. Step 5: Solve for x
    x = 1,160,728,185.50/39,305.07
  6. Step 6: Final answer
    x = 29,531.26

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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.