Home / 31,148.13-42,984.42-17,721.99

Finding the Fourth Proportional to 31,148.13, 42,984.42 and 17,721.99

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Solution

The fourth proportional to 31,148.13, 42,984.42 and 17,721.99 is: 24,456.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,148.13 : 42,984.42 = 17,721.99 : x
  2. Step 2: Convert to fraction form
    31,148.13/42,984.42 = 17,721.99/x
  3. Step 3: Cross multiply
    31,148.13x = 42,984.42 × 17,721.99
  4. Step 4: Simplify right side
    31,148.13x = 761,769,461.40
  5. Step 5: Solve for x
    x = 761,769,461.40/31,148.13
  6. Step 6: Final answer
    x = 24,456.35

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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.