Home / 28,423.79-42,587.15-15,936.02

Finding the Fourth Proportional to 28,423.79, 42,587.15 and 15,936.02

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Solution

The fourth proportional to 28,423.79, 42,587.15 and 15,936.02 is: 23,876.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.79 : 42,587.15 = 15,936.02 : x
  2. Step 2: Convert to fraction form
    28,423.79/42,587.15 = 15,936.02/x
  3. Step 3: Cross multiply
    28,423.79x = 42,587.15 × 15,936.02
  4. Step 4: Simplify right side
    28,423.79x = 678,669,700.93
  5. Step 5: Solve for x
    x = 678,669,700.93/28,423.79
  6. Step 6: Final answer
    x = 23,876.82

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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.