Home / 31,142.08-42,977.11-16,995.70

Finding the Fourth Proportional to 31,142.08, 42,977.11 and 16,995.70

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Solution

The fourth proportional to 31,142.08, 42,977.11 and 16,995.70 is: 23,454.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,142.08 : 42,977.11 = 16,995.70 : x
  2. Step 2: Convert to fraction form
    31,142.08/42,977.11 = 16,995.70/x
  3. Step 3: Cross multiply
    31,142.08x = 42,977.11 × 16,995.70
  4. Step 4: Simplify right side
    31,142.08x = 730,426,068.43
  5. Step 5: Solve for x
    x = 730,426,068.43/31,142.08
  6. Step 6: Final answer
    x = 23,454.63

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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.