Home / 31,020.64-42,809.36-16,874.38

Finding the Fourth Proportional to 31,020.64, 42,809.36 and 16,874.38

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Solution

The fourth proportional to 31,020.64, 42,809.36 and 16,874.38 is: 23,287.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,020.64 : 42,809.36 = 16,874.38 : x
  2. Step 2: Convert to fraction form
    31,020.64/42,809.36 = 16,874.38/x
  3. Step 3: Cross multiply
    31,020.64x = 42,809.36 × 16,874.38
  4. Step 4: Simplify right side
    31,020.64x = 722,381,408.20
  5. Step 5: Solve for x
    x = 722,381,408.20/31,020.64
  6. Step 6: Final answer
    x = 23,287.12

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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.