Home / 42,315.76-63,471.12-18,935.92

Finding the Fourth Proportional to 42,315.76, 63,471.12 and 18,935.92

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Solution

The fourth proportional to 42,315.76, 63,471.12 and 18,935.92 is: 28,402.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,315.76 : 63,471.12 = 18,935.92 : x
  2. Step 2: Convert to fraction form
    42,315.76/63,471.12 = 18,935.92/x
  3. Step 3: Cross multiply
    42,315.76x = 63,471.12 × 18,935.92
  4. Step 4: Simplify right side
    42,315.76x = 1,201,884,050.63
  5. Step 5: Solve for x
    x = 1,201,884,050.63/42,315.76
  6. Step 6: Final answer
    x = 28,402.75

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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.