Home / 18,678.62-25,785.91-12,314.45

Finding the Fourth Proportional to 18,678.62, 25,785.91 and 12,314.45

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Solution

The fourth proportional to 18,678.62, 25,785.91 and 12,314.45 is: 17,000.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.62 : 25,785.91 = 12,314.45 : x
  2. Step 2: Convert to fraction form
    18,678.62/25,785.91 = 12,314.45/x
  3. Step 3: Cross multiply
    18,678.62x = 25,785.91 × 12,314.45
  4. Step 4: Simplify right side
    18,678.62x = 317,539,333.08
  5. Step 5: Solve for x
    x = 317,539,333.08/18,678.62
  6. Step 6: Final answer
    x = 17,000.15

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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.