Home / 10,285.28-15,325.45-9,181.20

Finding the Fourth Proportional to 10,285.28, 15,325.45 and 9,181.20

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Solution

The fourth proportional to 10,285.28, 15,325.45 and 9,181.20 is: 13,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,285.28 : 15,325.45 = 9,181.20 : x
  2. Step 2: Convert to fraction form
    10,285.28/15,325.45 = 9,181.20/x
  3. Step 3: Cross multiply
    10,285.28x = 15,325.45 × 9,181.20
  4. Step 4: Simplify right side
    10,285.28x = 140,706,021.50
  5. Step 5: Solve for x
    x = 140,706,021.50/10,285.28
  6. Step 6: Final answer
    x = 13,680.33

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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.