Home / 21,160.74-29,200.80-12,211.12

Finding the Fourth Proportional to 21,160.74, 29,200.80 and 12,211.12

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Solution

The fourth proportional to 21,160.74, 29,200.80 and 12,211.12 is: 16,850.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.74 : 29,200.80 = 12,211.12 : x
  2. Step 2: Convert to fraction form
    21,160.74/29,200.80 = 12,211.12/x
  3. Step 3: Cross multiply
    21,160.74x = 29,200.80 × 12,211.12
  4. Step 4: Simplify right side
    21,160.74x = 356,574,472.90
  5. Step 5: Solve for x
    x = 356,574,472.90/21,160.74
  6. Step 6: Final answer
    x = 16,850.76

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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.