Home / 20,547.20-30,772.20-13,937.60

Finding the Fourth Proportional to 20,547.20, 30,772.20 and 13,937.60

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Solution

The fourth proportional to 20,547.20, 30,772.20 and 13,937.60 is: 20,873.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,547.20 : 30,772.20 = 13,937.60 : x
  2. Step 2: Convert to fraction form
    20,547.20/30,772.20 = 13,937.60/x
  3. Step 3: Cross multiply
    20,547.20x = 30,772.20 × 13,937.60
  4. Step 4: Simplify right side
    20,547.20x = 428,890,614.72
  5. Step 5: Solve for x
    x = 428,890,614.72/20,547.20
  6. Step 6: Final answer
    x = 20,873.43

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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.