Home / 22,985.80-31,728.44-13,553.76

Finding the Fourth Proportional to 22,985.80, 31,728.44 and 13,553.76

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Solution

The fourth proportional to 22,985.80, 31,728.44 and 13,553.76 is: 18,708.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,985.80 : 31,728.44 = 13,553.76 : x
  2. Step 2: Convert to fraction form
    22,985.80/31,728.44 = 13,553.76/x
  3. Step 3: Cross multiply
    22,985.80x = 31,728.44 × 13,553.76
  4. Step 4: Simplify right side
    22,985.80x = 430,039,660.93
  5. Step 5: Solve for x
    x = 430,039,660.93/22,985.80
  6. Step 6: Final answer
    x = 18,708.93

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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.