Home / 20,937.02-28,900.02-13,772.20

Finding the Fourth Proportional to 20,937.02, 28,900.02 and 13,772.20

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Solution

The fourth proportional to 20,937.02, 28,900.02 and 13,772.20 is: 19,010.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.02 : 28,900.02 = 13,772.20 : x
  2. Step 2: Convert to fraction form
    20,937.02/28,900.02 = 13,772.20/x
  3. Step 3: Cross multiply
    20,937.02x = 28,900.02 × 13,772.20
  4. Step 4: Simplify right side
    20,937.02x = 398,016,855.44
  5. Step 5: Solve for x
    x = 398,016,855.44/20,937.02
  6. Step 6: Final answer
    x = 19,010.20

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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.