Home / 20,960.28-28,931.32-12,468.38

Finding the Fourth Proportional to 20,960.28, 28,931.32 and 12,468.38

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Solution

The fourth proportional to 20,960.28, 28,931.32 and 12,468.38 is: 17,210.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.28 : 28,931.32 = 12,468.38 : x
  2. Step 2: Convert to fraction form
    20,960.28/28,931.32 = 12,468.38/x
  3. Step 3: Cross multiply
    20,960.28x = 28,931.32 × 12,468.38
  4. Step 4: Simplify right side
    20,960.28x = 360,726,691.66
  5. Step 5: Solve for x
    x = 360,726,691.66/20,960.28
  6. Step 6: Final answer
    x = 17,210.01

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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.