Home / 20,387.08-28,121.22-14,730.13

Finding the Fourth Proportional to 20,387.08, 28,121.22 and 14,730.13

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Solution

The fourth proportional to 20,387.08, 28,121.22 and 14,730.13 is: 20,318.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.08 : 28,121.22 = 14,730.13 : x
  2. Step 2: Convert to fraction form
    20,387.08/28,121.22 = 14,730.13/x
  3. Step 3: Cross multiply
    20,387.08x = 28,121.22 × 14,730.13
  4. Step 4: Simplify right side
    20,387.08x = 414,229,226.36
  5. Step 5: Solve for x
    x = 414,229,226.36/20,387.08
  6. Step 6: Final answer
    x = 20,318.22

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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.