Home / 15,113.06-20,855.61-8,398.52

Finding the Fourth Proportional to 15,113.06, 20,855.61 and 8,398.52

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Solution

The fourth proportional to 15,113.06, 20,855.61 and 8,398.52 is: 11,589.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113.06 : 20,855.61 = 8,398.52 : x
  2. Step 2: Convert to fraction form
    15,113.06/20,855.61 = 8,398.52/x
  3. Step 3: Cross multiply
    15,113.06x = 20,855.61 × 8,398.52
  4. Step 4: Simplify right side
    15,113.06x = 175,156,153.42
  5. Step 5: Solve for x
    x = 175,156,153.42/15,113.06
  6. Step 6: Final answer
    x = 11,589.72

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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.