Home / 31,151.05-42,986.95-17,721.04

Finding the Fourth Proportional to 31,151.05, 42,986.95 and 17,721.04

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Solution

The fourth proportional to 31,151.05, 42,986.95 and 17,721.04 is: 24,454.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,151.05 : 42,986.95 = 17,721.04 : x
  2. Step 2: Convert to fraction form
    31,151.05/42,986.95 = 17,721.04/x
  3. Step 3: Cross multiply
    31,151.05x = 42,986.95 × 17,721.04
  4. Step 4: Simplify right side
    31,151.05x = 761,773,416.13
  5. Step 5: Solve for x
    x = 761,773,416.13/31,151.05
  6. Step 6: Final answer
    x = 24,454.18

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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.