Home / 18,966.86-28,447.81-5,818.13

Finding the Fourth Proportional to 18,966.86, 28,447.81 and 5,818.13

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Solution

The fourth proportional to 18,966.86, 28,447.81 and 5,818.13 is: 8,726.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,966.86 : 28,447.81 = 5,818.13 : x
  2. Step 2: Convert to fraction form
    18,966.86/28,447.81 = 5,818.13/x
  3. Step 3: Cross multiply
    18,966.86x = 28,447.81 × 5,818.13
  4. Step 4: Simplify right side
    18,966.86x = 165,513,006.69
  5. Step 5: Solve for x
    x = 165,513,006.69/18,966.86
  6. Step 6: Final answer
    x = 8,726.43

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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.