Home / 15,774.39-21,767.67-8,700.80

Finding the Fourth Proportional to 15,774.39, 21,767.67 and 8,700.80

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Solution

The fourth proportional to 15,774.39, 21,767.67 and 8,700.80 is: 12,006.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,774.39 : 21,767.67 = 8,700.80 : x
  2. Step 2: Convert to fraction form
    15,774.39/21,767.67 = 8,700.80/x
  3. Step 3: Cross multiply
    15,774.39x = 21,767.67 × 8,700.80
  4. Step 4: Simplify right side
    15,774.39x = 189,396,034.30
  5. Step 5: Solve for x
    x = 189,396,034.30/15,774.39
  6. Step 6: Final answer
    x = 12,006.55

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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.