Home / 31,156.54-42,995.80-17,009.38

Finding the Fourth Proportional to 31,156.54, 42,995.80 and 17,009.38

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Solution

The fourth proportional to 31,156.54, 42,995.80 and 17,009.38 is: 23,472.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,156.54 : 42,995.80 = 17,009.38 : x
  2. Step 2: Convert to fraction form
    31,156.54/42,995.80 = 17,009.38/x
  3. Step 3: Cross multiply
    31,156.54x = 42,995.80 × 17,009.38
  4. Step 4: Simplify right side
    31,156.54x = 731,331,900.60
  5. Step 5: Solve for x
    x = 731,331,900.60/31,156.54
  6. Step 6: Final answer
    x = 23,472.82

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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.