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Finding the Fourth Proportional to 12,482.30, 18,711.30 and 10,147.07

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Solution

The fourth proportional to 12,482.30, 18,711.30 and 10,147.07 is: 15,210.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482.30 : 18,711.30 = 10,147.07 : x
  2. Step 2: Convert to fraction form
    12,482.30/18,711.30 = 10,147.07/x
  3. Step 3: Cross multiply
    12,482.30x = 18,711.30 × 10,147.07
  4. Step 4: Simplify right side
    12,482.30x = 189,864,955.72
  5. Step 5: Solve for x
    x = 189,864,955.72/12,482.30
  6. Step 6: Final answer
    x = 15,210.73

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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.