Home / 42,535.40-63,803.90-18,517.28

Finding the Fourth Proportional to 42,535.40, 63,803.90 and 18,517.28

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Solution

The fourth proportional to 42,535.40, 63,803.90 and 18,517.28 is: 27,776.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,535.40 : 63,803.90 = 18,517.28 : x
  2. Step 2: Convert to fraction form
    42,535.40/63,803.90 = 18,517.28/x
  3. Step 3: Cross multiply
    42,535.40x = 63,803.90 × 18,517.28
  4. Step 4: Simplify right side
    42,535.40x = 1,181,474,681.39
  5. Step 5: Solve for x
    x = 1,181,474,681.39/42,535.40
  6. Step 6: Final answer
    x = 27,776.27

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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.