Home / 10,280.12-15,419-2,885.18

Finding the Fourth Proportional to 10,280.12, 15,419 and 2,885.18

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Solution

The fourth proportional to 10,280.12, 15,419 and 2,885.18 is: 4,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.12 : 15,419 = 2,885.18 : x
  2. Step 2: Convert to fraction form
    10,280.12/15,419 = 2,885.18/x
  3. Step 3: Cross multiply
    10,280.12x = 15,419 × 2,885.18
  4. Step 4: Simplify right side
    10,280.12x = 44,486,590.42
  5. Step 5: Solve for x
    x = 44,486,590.42/10,280.12
  6. Step 6: Final answer
    x = 4,327.44

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Double scale
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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.