Home / 42,615.71-63,901.05-18,912.96

Finding the Fourth Proportional to 42,615.71, 63,901.05 and 18,912.96

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Solution

The fourth proportional to 42,615.71, 63,901.05 and 18,912.96 is: 28,359.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,615.71 : 63,901.05 = 18,912.96 : x
  2. Step 2: Convert to fraction form
    42,615.71/63,901.05 = 18,912.96/x
  3. Step 3: Cross multiply
    42,615.71x = 63,901.05 × 18,912.96
  4. Step 4: Simplify right side
    42,615.71x = 1,208,558,002.61
  5. Step 5: Solve for x
    x = 1,208,558,002.61/42,615.71
  6. Step 6: Final answer
    x = 28,359.45

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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.