Home / 31,146.15-42,981.08-16,999.10

Finding the Fourth Proportional to 31,146.15, 42,981.08 and 16,999.10

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Solution

The fourth proportional to 31,146.15, 42,981.08 and 16,999.10 is: 23,458.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,146.15 : 42,981.08 = 16,999.10 : x
  2. Step 2: Convert to fraction form
    31,146.15/42,981.08 = 16,999.10/x
  3. Step 3: Cross multiply
    31,146.15x = 42,981.08 × 16,999.10
  4. Step 4: Simplify right side
    31,146.15x = 730,639,462.12
  5. Step 5: Solve for x
    x = 730,639,462.12/31,146.15
  6. Step 6: Final answer
    x = 23,458.42

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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.