Home / 31,158.95-42,999.80-17,011.49

Finding the Fourth Proportional to 31,158.95, 42,999.80 and 17,011.49

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Solution

The fourth proportional to 31,158.95, 42,999.80 and 17,011.49 is: 23,476.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,158.95 : 42,999.80 = 17,011.49 : x
  2. Step 2: Convert to fraction form
    31,158.95/42,999.80 = 17,011.49/x
  3. Step 3: Cross multiply
    31,158.95x = 42,999.80 × 17,011.49
  4. Step 4: Simplify right side
    31,158.95x = 731,490,367.65
  5. Step 5: Solve for x
    x = 731,490,367.65/31,158.95
  6. Step 6: Final answer
    x = 23,476.10

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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.