Home / 10,121.20-13,973.18-6,400.24

Finding the Fourth Proportional to 10,121.20, 13,973.18 and 6,400.24

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Solution

The fourth proportional to 10,121.20, 13,973.18 and 6,400.24 is: 8,836.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.20 : 13,973.18 = 6,400.24 : x
  2. Step 2: Convert to fraction form
    10,121.20/13,973.18 = 6,400.24/x
  3. Step 3: Cross multiply
    10,121.20x = 13,973.18 × 6,400.24
  4. Step 4: Simplify right side
    10,121.20x = 89,431,705.56
  5. Step 5: Solve for x
    x = 89,431,705.56/10,121.20
  6. Step 6: Final answer
    x = 8,836.08

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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.