Home / 28,221.26-38,941.17-15,646.10

Finding the Fourth Proportional to 28,221.26, 38,941.17 and 15,646.10

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Solution

The fourth proportional to 28,221.26, 38,941.17 and 15,646.10 is: 21,589.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.26 : 38,941.17 = 15,646.10 : x
  2. Step 2: Convert to fraction form
    28,221.26/38,941.17 = 15,646.10/x
  3. Step 3: Cross multiply
    28,221.26x = 38,941.17 × 15,646.10
  4. Step 4: Simplify right side
    28,221.26x = 609,277,439.94
  5. Step 5: Solve for x
    x = 609,277,439.94/28,221.26
  6. Step 6: Final answer
    x = 21,589.31

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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.