Home / 12,154.16-18,218.28-5,132.72

Finding the Fourth Proportional to 12,154.16, 18,218.28 and 5,132.72

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Solution

The fourth proportional to 12,154.16, 18,218.28 and 5,132.72 is: 7,693.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,154.16 : 18,218.28 = 5,132.72 : x
  2. Step 2: Convert to fraction form
    12,154.16/18,218.28 = 5,132.72/x
  3. Step 3: Cross multiply
    12,154.16x = 18,218.28 × 5,132.72
  4. Step 4: Simplify right side
    12,154.16x = 93,509,330.12
  5. Step 5: Solve for x
    x = 93,509,330.12/12,154.16
  6. Step 6: Final answer
    x = 7,693.61

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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.