Home / 10,391.76-14,339.88-5,675.04

Finding the Fourth Proportional to 10,391.76, 14,339.88 and 5,675.04

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Solution

The fourth proportional to 10,391.76, 14,339.88 and 5,675.04 is: 7,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.76 : 14,339.88 = 5,675.04 : x
  2. Step 2: Convert to fraction form
    10,391.76/14,339.88 = 5,675.04/x
  3. Step 3: Cross multiply
    10,391.76x = 14,339.88 × 5,675.04
  4. Step 4: Simplify right side
    10,391.76x = 81,379,392.60
  5. Step 5: Solve for x
    x = 81,379,392.60/10,391.76
  6. Step 6: Final answer
    x = 7,831.15

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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.