Home / 15,859.18-21,885.60-9,144.76

Finding the Fourth Proportional to 15,859.18, 21,885.60 and 9,144.76

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Solution

The fourth proportional to 15,859.18, 21,885.60 and 9,144.76 is: 12,619.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,859.18 : 21,885.60 = 9,144.76 : x
  2. Step 2: Convert to fraction form
    15,859.18/21,885.60 = 9,144.76/x
  3. Step 3: Cross multiply
    15,859.18x = 21,885.60 × 9,144.76
  4. Step 4: Simplify right side
    15,859.18x = 200,138,559.46
  5. Step 5: Solve for x
    x = 200,138,559.46/15,859.18
  6. Step 6: Final answer
    x = 12,619.73

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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.