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Finding the Fourth Proportional to 18,624.32, 25,706.40 and 12,334.40

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Solution

The fourth proportional to 18,624.32, 25,706.40 and 12,334.40 is: 17,024.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.32 : 25,706.40 = 12,334.40 : x
  2. Step 2: Convert to fraction form
    18,624.32/25,706.40 = 12,334.40/x
  3. Step 3: Cross multiply
    18,624.32x = 25,706.40 × 12,334.40
  4. Step 4: Simplify right side
    18,624.32x = 317,073,020.16
  5. Step 5: Solve for x
    x = 317,073,020.16/18,624.32
  6. Step 6: Final answer
    x = 17,024.68

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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.