Home / 18,780.35-25,934.45-12,077.62

Finding the Fourth Proportional to 18,780.35, 25,934.45 and 12,077.62

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Solution

The fourth proportional to 18,780.35, 25,934.45 and 12,077.62 is: 16,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.35 : 25,934.45 = 12,077.62 : x
  2. Step 2: Convert to fraction form
    18,780.35/25,934.45 = 12,077.62/x
  3. Step 3: Cross multiply
    18,780.35x = 25,934.45 × 12,077.62
  4. Step 4: Simplify right side
    18,780.35x = 313,226,306.78
  5. Step 5: Solve for x
    x = 313,226,306.78/18,780.35
  6. Step 6: Final answer
    x = 16,678.40

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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.