Home / 10,378.35-15,549.30-8,519.40

Finding the Fourth Proportional to 10,378.35, 15,549.30 and 8,519.40

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Solution

The fourth proportional to 10,378.35, 15,549.30 and 8,519.40 is: 12,764.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.35 : 15,549.30 = 8,519.40 : x
  2. Step 2: Convert to fraction form
    10,378.35/15,549.30 = 8,519.40/x
  3. Step 3: Cross multiply
    10,378.35x = 15,549.30 × 8,519.40
  4. Step 4: Simplify right side
    10,378.35x = 132,470,706.42
  5. Step 5: Solve for x
    x = 132,470,706.42/10,378.35
  6. Step 6: Final answer
    x = 12,764.14

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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.