Home / 12,472.79-18,712.72-4,158.24

Finding the Fourth Proportional to 12,472.79, 18,712.72 and 4,158.24

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Solution

The fourth proportional to 12,472.79, 18,712.72 and 4,158.24 is: 6,238.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.79 : 18,712.72 = 4,158.24 : x
  2. Step 2: Convert to fraction form
    12,472.79/18,712.72 = 4,158.24/x
  3. Step 3: Cross multiply
    12,472.79x = 18,712.72 × 4,158.24
  4. Step 4: Simplify right side
    12,472.79x = 77,811,915.84
  5. Step 5: Solve for x
    x = 77,811,915.84/12,472.79
  6. Step 6: Final answer
    x = 6,238.54

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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.