Home / 28,342.24-42,513-12,748.84

Finding the Fourth Proportional to 28,342.24, 42,513 and 12,748.84

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Solution

The fourth proportional to 28,342.24, 42,513 and 12,748.84 is: 19,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.24 : 42,513 = 12,748.84 : x
  2. Step 2: Convert to fraction form
    28,342.24/42,513 = 12,748.84/x
  3. Step 3: Cross multiply
    28,342.24x = 42,513 × 12,748.84
  4. Step 4: Simplify right side
    28,342.24x = 541,991,434.92
  5. Step 5: Solve for x
    x = 541,991,434.92/28,342.24
  6. Step 6: Final answer
    x = 19,123.10

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1.5x scale

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.