Home / 15,859.17-21,885.64-9,144.70

Finding the Fourth Proportional to 15,859.17, 21,885.64 and 9,144.70

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Solution

The fourth proportional to 15,859.17, 21,885.64 and 9,144.70 is: 12,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,859.17 : 21,885.64 = 9,144.70 : x
  2. Step 2: Convert to fraction form
    15,859.17/21,885.64 = 9,144.70/x
  3. Step 3: Cross multiply
    15,859.17x = 21,885.64 × 9,144.70
  4. Step 4: Simplify right side
    15,859.17x = 200,137,585.97
  5. Step 5: Solve for x
    x = 200,137,585.97/15,859.17
  6. Step 6: Final answer
    x = 12,619.68

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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.