Home / 10,247.64-15,378.75-7,909.98

Finding the Fourth Proportional to 10,247.64, 15,378.75 and 7,909.98

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Solution

The fourth proportional to 10,247.64, 15,378.75 and 7,909.98 is: 11,870.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,247.64 : 15,378.75 = 7,909.98 : x
  2. Step 2: Convert to fraction form
    10,247.64/15,378.75 = 7,909.98/x
  3. Step 3: Cross multiply
    10,247.64x = 15,378.75 × 7,909.98
  4. Step 4: Simplify right side
    10,247.64x = 121,645,604.93
  5. Step 5: Solve for x
    x = 121,645,604.93/10,247.64
  6. Step 6: Final answer
    x = 11,870.60

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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.