Home / 12,631.04-18,932-7,086.88

Finding the Fourth Proportional to 12,631.04, 18,932 and 7,086.88

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Solution

The fourth proportional to 12,631.04, 18,932 and 7,086.88 is: 10,622.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.04 : 18,932 = 7,086.88 : x
  2. Step 2: Convert to fraction form
    12,631.04/18,932 = 7,086.88/x
  3. Step 3: Cross multiply
    12,631.04x = 18,932 × 7,086.88
  4. Step 4: Simplify right side
    12,631.04x = 134,168,812.16
  5. Step 5: Solve for x
    x = 134,168,812.16/12,631.04
  6. Step 6: Final answer
    x = 10,622.15

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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.