Home / 10,306.78-15,460.21-2,515.60

Finding the Fourth Proportional to 10,306.78, 15,460.21 and 2,515.60

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Solution

The fourth proportional to 10,306.78, 15,460.21 and 2,515.60 is: 3,773.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,306.78 : 15,460.21 = 2,515.60 : x
  2. Step 2: Convert to fraction form
    10,306.78/15,460.21 = 2,515.60/x
  3. Step 3: Cross multiply
    10,306.78x = 15,460.21 × 2,515.60
  4. Step 4: Simplify right side
    10,306.78x = 38,891,639.78
  5. Step 5: Solve for x
    x = 38,891,639.78/10,306.78
  6. Step 6: Final answer
    x = 3,773.40

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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.