Home / 10,367.80-15,527.40-6,431.20

Finding the Fourth Proportional to 10,367.80, 15,527.40 and 6,431.20

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Solution

The fourth proportional to 10,367.80, 15,527.40 and 6,431.20 is: 9,631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,367.80 : 15,527.40 = 6,431.20 : x
  2. Step 2: Convert to fraction form
    10,367.80/15,527.40 = 6,431.20/x
  3. Step 3: Cross multiply
    10,367.80x = 15,527.40 × 6,431.20
  4. Step 4: Simplify right side
    10,367.80x = 99,859,814.88
  5. Step 5: Solve for x
    x = 99,859,814.88/10,367.80
  6. Step 6: Final answer
    x = 9,631.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.