Home / 31,108.18-42,927.96-16,961.08

Finding the Fourth Proportional to 31,108.18, 42,927.96 and 16,961.08

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Solution

The fourth proportional to 31,108.18, 42,927.96 and 16,961.08 is: 23,405.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,108.18 : 42,927.96 = 16,961.08 : x
  2. Step 2: Convert to fraction form
    31,108.18/42,927.96 = 16,961.08/x
  3. Step 3: Cross multiply
    31,108.18x = 42,927.96 × 16,961.08
  4. Step 4: Simplify right side
    31,108.18x = 728,104,563.80
  5. Step 5: Solve for x
    x = 728,104,563.80/31,108.18
  6. Step 6: Final answer
    x = 23,405.57

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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.