Home / 10,276.12-15,309.05-9,780.76

Finding the Fourth Proportional to 10,276.12, 15,309.05 and 9,780.76

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Solution

The fourth proportional to 10,276.12, 15,309.05 and 9,780.76 is: 14,571.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,276.12 : 15,309.05 = 9,780.76 : x
  2. Step 2: Convert to fraction form
    10,276.12/15,309.05 = 9,780.76/x
  3. Step 3: Cross multiply
    10,276.12x = 15,309.05 × 9,780.76
  4. Step 4: Simplify right side
    10,276.12x = 149,734,143.88
  5. Step 5: Solve for x
    x = 149,734,143.88/10,276.12
  6. Step 6: Final answer
    x = 14,571.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.