Home / 31,116.80-42,941.10-16,969.65

Finding the Fourth Proportional to 31,116.80, 42,941.10 and 16,969.65

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Solution

The fourth proportional to 31,116.80, 42,941.10 and 16,969.65 is: 23,418.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,116.80 : 42,941.10 = 16,969.65 : x
  2. Step 2: Convert to fraction form
    31,116.80/42,941.10 = 16,969.65/x
  3. Step 3: Cross multiply
    31,116.80x = 42,941.10 × 16,969.65
  4. Step 4: Simplify right side
    31,116.80x = 728,695,437.62
  5. Step 5: Solve for x
    x = 728,695,437.62/31,116.80
  6. Step 6: Final answer
    x = 23,418.07

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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.