Home / 12,465.28-18,680.10-9,152.38

Finding the Fourth Proportional to 12,465.28, 18,680.10 and 9,152.38

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Solution

The fourth proportional to 12,465.28, 18,680.10 and 9,152.38 is: 13,715.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,465.28 : 18,680.10 = 9,152.38 : x
  2. Step 2: Convert to fraction form
    12,465.28/18,680.10 = 9,152.38/x
  3. Step 3: Cross multiply
    12,465.28x = 18,680.10 × 9,152.38
  4. Step 4: Simplify right side
    12,465.28x = 170,967,373.64
  5. Step 5: Solve for x
    x = 170,967,373.64/12,465.28
  6. Step 6: Final answer
    x = 13,715.49

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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.