Home / 42,761.90-64,142.89-11,597.15

Finding the Fourth Proportional to 42,761.90, 64,142.89 and 11,597.15

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Solution

The fourth proportional to 42,761.90, 64,142.89 and 11,597.15 is: 17,395.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,761.90 : 64,142.89 = 11,597.15 : x
  2. Step 2: Convert to fraction form
    42,761.90/64,142.89 = 11,597.15/x
  3. Step 3: Cross multiply
    42,761.90x = 64,142.89 × 11,597.15
  4. Step 4: Simplify right side
    42,761.90x = 743,874,848.13
  5. Step 5: Solve for x
    x = 743,874,848.13/42,761.90
  6. Step 6: Final answer
    x = 17,395.74

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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.