Home / 31,030.13-42,821.91-16,883.28

Finding the Fourth Proportional to 31,030.13, 42,821.91 and 16,883.28

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Solution

The fourth proportional to 31,030.13, 42,821.91 and 16,883.28 is: 23,299.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,030.13 : 42,821.91 = 16,883.28 : x
  2. Step 2: Convert to fraction form
    31,030.13/42,821.91 = 16,883.28/x
  3. Step 3: Cross multiply
    31,030.13x = 42,821.91 × 16,883.28
  4. Step 4: Simplify right side
    31,030.13x = 722,974,296.66
  5. Step 5: Solve for x
    x = 722,974,296.66/31,030.13
  6. Step 6: Final answer
    x = 23,299.11

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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.