Home / 31,309.10-46,965.45-9,125.90

Finding the Fourth Proportional to 31,309.10, 46,965.45 and 9,125.90

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Solution

The fourth proportional to 31,309.10, 46,965.45 and 9,125.90 is: 13,689.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,309.10 : 46,965.45 = 9,125.90 : x
  2. Step 2: Convert to fraction form
    31,309.10/46,965.45 = 9,125.90/x
  3. Step 3: Cross multiply
    31,309.10x = 46,965.45 × 9,125.90
  4. Step 4: Simplify right side
    31,309.10x = 428,602,000.16
  5. Step 5: Solve for x
    x = 428,602,000.16/31,309.10
  6. Step 6: Final answer
    x = 13,689.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.