Home / 28,309.15-42,463.83-8,587.88

Finding the Fourth Proportional to 28,309.15, 42,463.83 and 8,587.88

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Solution

The fourth proportional to 28,309.15, 42,463.83 and 8,587.88 is: 12,881.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.15 : 42,463.83 = 8,587.88 : x
  2. Step 2: Convert to fraction form
    28,309.15/42,463.83 = 8,587.88/x
  3. Step 3: Cross multiply
    28,309.15x = 42,463.83 × 8,587.88
  4. Step 4: Simplify right side
    28,309.15x = 364,674,276.38
  5. Step 5: Solve for x
    x = 364,674,276.38/28,309.15
  6. Step 6: Final answer
    x = 12,881.85

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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.