Home / 31,320.07-46,975.10-9,128.26

Finding the Fourth Proportional to 31,320.07, 46,975.10 and 9,128.26

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Solution

The fourth proportional to 31,320.07, 46,975.10 and 9,128.26 is: 13,690.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,320.07 : 46,975.10 = 9,128.26 : x
  2. Step 2: Convert to fraction form
    31,320.07/46,975.10 = 9,128.26/x
  3. Step 3: Cross multiply
    31,320.07x = 46,975.10 × 9,128.26
  4. Step 4: Simplify right side
    31,320.07x = 428,800,691.45
  5. Step 5: Solve for x
    x = 428,800,691.45/31,320.07
  6. Step 6: Final answer
    x = 13,690.92

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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.