Home / 20,926.62-28,882.98-12,856.59

Finding the Fourth Proportional to 20,926.62, 28,882.98 and 12,856.59

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Solution

The fourth proportional to 20,926.62, 28,882.98 and 12,856.59 is: 17,744.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.62 : 28,882.98 = 12,856.59 : x
  2. Step 2: Convert to fraction form
    20,926.62/28,882.98 = 12,856.59/x
  3. Step 3: Cross multiply
    20,926.62x = 28,882.98 × 12,856.59
  4. Step 4: Simplify right side
    20,926.62x = 371,336,631.84
  5. Step 5: Solve for x
    x = 371,336,631.84/20,926.62
  6. Step 6: Final answer
    x = 17,744.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.