Home / 42,156.64-63,256.83-18,777.61

Finding the Fourth Proportional to 42,156.64, 63,256.83 and 18,777.61

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Solution

The fourth proportional to 42,156.64, 63,256.83 and 18,777.61 is: 28,176.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,156.64 : 63,256.83 = 18,777.61 : x
  2. Step 2: Convert to fraction form
    42,156.64/63,256.83 = 18,777.61/x
  3. Step 3: Cross multiply
    42,156.64x = 63,256.83 × 18,777.61
  4. Step 4: Simplify right side
    42,156.64x = 1,187,812,083.58
  5. Step 5: Solve for x
    x = 1,187,812,083.58/42,156.64
  6. Step 6: Final answer
    x = 28,176.16

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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.