Home / 31,153.30-42,995.68-17,721.96

Finding the Fourth Proportional to 31,153.30, 42,995.68 and 17,721.96

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Solution

The fourth proportional to 31,153.30, 42,995.68 and 17,721.96 is: 24,458.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,153.30 : 42,995.68 = 17,721.96 : x
  2. Step 2: Convert to fraction form
    31,153.30/42,995.68 = 17,721.96/x
  3. Step 3: Cross multiply
    31,153.30x = 42,995.68 × 17,721.96
  4. Step 4: Simplify right side
    31,153.30x = 761,967,721.13
  5. Step 5: Solve for x
    x = 761,967,721.13/31,153.30
  6. Step 6: Final answer
    x = 24,458.65

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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.