Home / 19,151.07-28,689.17-12,557.13

Finding the Fourth Proportional to 19,151.07, 28,689.17 and 12,557.13

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Solution

The fourth proportional to 19,151.07, 28,689.17 and 12,557.13 is: 18,811.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,151.07 : 28,689.17 = 12,557.13 : x
  2. Step 2: Convert to fraction form
    19,151.07/28,689.17 = 12,557.13/x
  3. Step 3: Cross multiply
    19,151.07x = 28,689.17 × 12,557.13
  4. Step 4: Simplify right side
    19,151.07x = 360,253,574.50
  5. Step 5: Solve for x
    x = 360,253,574.50/19,151.07
  6. Step 6: Final answer
    x = 18,811.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.