Home / 16,211.60-22,371.36-9,139.49

Finding the Fourth Proportional to 16,211.60, 22,371.36 and 9,139.49

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Solution

The fourth proportional to 16,211.60, 22,371.36 and 9,139.49 is: 12,612.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,211.60 : 22,371.36 = 9,139.49 : x
  2. Step 2: Convert to fraction form
    16,211.60/22,371.36 = 9,139.49/x
  3. Step 3: Cross multiply
    16,211.60x = 22,371.36 × 9,139.49
  4. Step 4: Simplify right side
    16,211.60x = 204,462,821.01
  5. Step 5: Solve for x
    x = 204,462,821.01/16,211.60
  6. Step 6: Final answer
    x = 12,612.13

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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.