Home / 20,607.28-28,438.02-11,175.82

Finding the Fourth Proportional to 20,607.28, 28,438.02 and 11,175.82

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Solution

The fourth proportional to 20,607.28, 28,438.02 and 11,175.82 is: 15,422.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.28 : 28,438.02 = 11,175.82 : x
  2. Step 2: Convert to fraction form
    20,607.28/28,438.02 = 11,175.82/x
  3. Step 3: Cross multiply
    20,607.28x = 28,438.02 × 11,175.82
  4. Step 4: Simplify right side
    20,607.28x = 317,818,192.68
  5. Step 5: Solve for x
    x = 317,818,192.68/20,607.28
  6. Step 6: Final answer
    x = 15,422.62

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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.