Home / 20,510.40-28,304.94-11,557.41

Finding the Fourth Proportional to 20,510.40, 28,304.94 and 11,557.41

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Solution

The fourth proportional to 20,510.40, 28,304.94 and 11,557.41 is: 15,949.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.40 : 28,304.94 = 11,557.41 : x
  2. Step 2: Convert to fraction form
    20,510.40/28,304.94 = 11,557.41/x
  3. Step 3: Cross multiply
    20,510.40x = 28,304.94 × 11,557.41
  4. Step 4: Simplify right side
    20,510.40x = 327,131,796.61
  5. Step 5: Solve for x
    x = 327,131,796.61/20,510.40
  6. Step 6: Final answer
    x = 15,949.56

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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.