Home / 10,390.68-14,339.16-5,675.04

Finding the Fourth Proportional to 10,390.68, 14,339.16 and 5,675.04

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Solution

The fourth proportional to 10,390.68, 14,339.16 and 5,675.04 is: 7,831.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.68 : 14,339.16 = 5,675.04 : x
  2. Step 2: Convert to fraction form
    10,390.68/14,339.16 = 5,675.04/x
  3. Step 3: Cross multiply
    10,390.68x = 14,339.16 × 5,675.04
  4. Step 4: Simplify right side
    10,390.68x = 81,375,306.57
  5. Step 5: Solve for x
    x = 81,375,306.57/10,390.68
  6. Step 6: Final answer
    x = 7,831.57

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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.