Home / 10,378.59-14,321.97-6,400.08

Finding the Fourth Proportional to 10,378.59, 14,321.97 and 6,400.08

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Solution

The fourth proportional to 10,378.59, 14,321.97 and 6,400.08 is: 8,831.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.59 : 14,321.97 = 6,400.08 : x
  2. Step 2: Convert to fraction form
    10,378.59/14,321.97 = 6,400.08/x
  3. Step 3: Cross multiply
    10,378.59x = 14,321.97 × 6,400.08
  4. Step 4: Simplify right side
    10,378.59x = 91,661,753.76
  5. Step 5: Solve for x
    x = 91,661,753.76/10,378.59
  6. Step 6: Final answer
    x = 8,831.81

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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.