Home / 31,015.95-42,801.89-16,869.03

Finding the Fourth Proportional to 31,015.95, 42,801.89 and 16,869.03

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Solution

The fourth proportional to 31,015.95, 42,801.89 and 16,869.03 is: 23,279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,015.95 : 42,801.89 = 16,869.03 : x
  2. Step 2: Convert to fraction form
    31,015.95/42,801.89 = 16,869.03/x
  3. Step 3: Cross multiply
    31,015.95x = 42,801.89 × 16,869.03
  4. Step 4: Simplify right side
    31,015.95x = 722,026,366.47
  5. Step 5: Solve for x
    x = 722,026,366.47/31,015.95
  6. Step 6: Final answer
    x = 23,279.20

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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.