Home / 10,390.60-14,339.12-5,674.96

Finding the Fourth Proportional to 10,390.60, 14,339.12 and 5,674.96

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Solution

The fourth proportional to 10,390.60, 14,339.12 and 5,674.96 is: 7,831.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.60 : 14,339.12 = 5,674.96 : x
  2. Step 2: Convert to fraction form
    10,390.60/14,339.12 = 5,674.96/x
  3. Step 3: Cross multiply
    10,390.60x = 14,339.12 × 5,674.96
  4. Step 4: Simplify right side
    10,390.60x = 81,373,932.44
  5. Step 5: Solve for x
    x = 81,373,932.44/10,390.60
  6. Step 6: Final answer
    x = 7,831.50

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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.