Home / 14,977.92-20,665.85-9,155.55

Finding the Fourth Proportional to 14,977.92, 20,665.85 and 9,155.55

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Solution

The fourth proportional to 14,977.92, 20,665.85 and 9,155.55 is: 12,632.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,977.92 : 20,665.85 = 9,155.55 : x
  2. Step 2: Convert to fraction form
    14,977.92/20,665.85 = 9,155.55/x
  3. Step 3: Cross multiply
    14,977.92x = 20,665.85 × 9,155.55
  4. Step 4: Simplify right side
    14,977.92x = 189,207,177.19
  5. Step 5: Solve for x
    x = 189,207,177.19/14,977.92
  6. Step 6: Final answer
    x = 12,632.41

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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.