Home / 42,531.29-63,803.80-12,942.16

Finding the Fourth Proportional to 42,531.29, 63,803.80 and 12,942.16

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Solution

The fourth proportional to 42,531.29, 63,803.80 and 12,942.16 is: 19,415.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,531.29 : 63,803.80 = 12,942.16 : x
  2. Step 2: Convert to fraction form
    42,531.29/63,803.80 = 12,942.16/x
  3. Step 3: Cross multiply
    42,531.29x = 63,803.80 × 12,942.16
  4. Step 4: Simplify right side
    42,531.29x = 825,758,988.21
  5. Step 5: Solve for x
    x = 825,758,988.21/42,531.29
  6. Step 6: Final answer
    x = 19,415.33

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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.