Home / 10,307.40-15,433.40-8,480.56

Finding the Fourth Proportional to 10,307.40, 15,433.40 and 8,480.56

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Solution

The fourth proportional to 10,307.40, 15,433.40 and 8,480.56 is: 12,698.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,307.40 : 15,433.40 = 8,480.56 : x
  2. Step 2: Convert to fraction form
    10,307.40/15,433.40 = 8,480.56/x
  3. Step 3: Cross multiply
    10,307.40x = 15,433.40 × 8,480.56
  4. Step 4: Simplify right side
    10,307.40x = 130,883,874.70
  5. Step 5: Solve for x
    x = 130,883,874.70/10,307.40
  6. Step 6: Final answer
    x = 12,698.05

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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.