Home / 28,547.88-39,397.14-15,972.72

Finding the Fourth Proportional to 28,547.88, 39,397.14 and 15,972.72

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Solution

The fourth proportional to 28,547.88, 39,397.14 and 15,972.72 is: 22,042.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.88 : 39,397.14 = 15,972.72 : x
  2. Step 2: Convert to fraction form
    28,547.88/39,397.14 = 15,972.72/x
  3. Step 3: Cross multiply
    28,547.88x = 39,397.14 × 15,972.72
  4. Step 4: Simplify right side
    28,547.88x = 629,279,486.02
  5. Step 5: Solve for x
    x = 629,279,486.02/28,547.88
  6. Step 6: Final answer
    x = 22,042.95

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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.