Home / 20,607.92-28,438.92-11,176.52

Finding the Fourth Proportional to 20,607.92, 28,438.92 and 11,176.52

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Solution

The fourth proportional to 20,607.92, 28,438.92 and 11,176.52 is: 15,423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.92 : 28,438.92 = 11,176.52 : x
  2. Step 2: Convert to fraction form
    20,607.92/28,438.92 = 11,176.52/x
  3. Step 3: Cross multiply
    20,607.92x = 28,438.92 × 11,176.52
  4. Step 4: Simplify right side
    20,607.92x = 317,848,158.16
  5. Step 5: Solve for x
    x = 317,848,158.16/20,607.92
  6. Step 6: Final answer
    x = 15,423.59

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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.