Home / 10,966.40-16,417.20-7,272.80

Finding the Fourth Proportional to 10,966.40, 16,417.20 and 7,272.80

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Solution

The fourth proportional to 10,966.40, 16,417.20 and 7,272.80 is: 10,887.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,966.40 : 16,417.20 = 7,272.80 : x
  2. Step 2: Convert to fraction form
    10,966.40/16,417.20 = 7,272.80/x
  3. Step 3: Cross multiply
    10,966.40x = 16,417.20 × 7,272.80
  4. Step 4: Simplify right side
    10,966.40x = 119,399,012.16
  5. Step 5: Solve for x
    x = 119,399,012.16/10,966.40
  6. Step 6: Final answer
    x = 10,887.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.