Home / 14,151.40-21,248.70-10,868.20

Finding the Fourth Proportional to 14,151.40, 21,248.70 and 10,868.20

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Solution

The fourth proportional to 14,151.40, 21,248.70 and 10,868.20 is: 16,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,151.40 : 21,248.70 = 10,868.20 : x
  2. Step 2: Convert to fraction form
    14,151.40/21,248.70 = 10,868.20/x
  3. Step 3: Cross multiply
    14,151.40x = 21,248.70 × 10,868.20
  4. Step 4: Simplify right side
    14,151.40x = 230,935,121.34
  5. Step 5: Solve for x
    x = 230,935,121.34/14,151.40
  6. Step 6: Final answer
    x = 16,318.89

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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.