Home / 15,655.42-21,605.16-8,581.69

Finding the Fourth Proportional to 15,655.42, 21,605.16 and 8,581.69

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Solution

The fourth proportional to 15,655.42, 21,605.16 and 8,581.69 is: 11,843.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.42 : 21,605.16 = 8,581.69 : x
  2. Step 2: Convert to fraction form
    15,655.42/21,605.16 = 8,581.69/x
  3. Step 3: Cross multiply
    15,655.42x = 21,605.16 × 8,581.69
  4. Step 4: Simplify right side
    15,655.42x = 185,408,785.52
  5. Step 5: Solve for x
    x = 185,408,785.52/15,655.42
  6. Step 6: Final answer
    x = 11,843.11

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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.