Home / 10,081.70-15,122.55-5,416.10

Finding the Fourth Proportional to 10,081.70, 15,122.55 and 5,416.10

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Solution

The fourth proportional to 10,081.70, 15,122.55 and 5,416.10 is: 8,124.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.70 : 15,122.55 = 5,416.10 : x
  2. Step 2: Convert to fraction form
    10,081.70/15,122.55 = 5,416.10/x
  3. Step 3: Cross multiply
    10,081.70x = 15,122.55 × 5,416.10
  4. Step 4: Simplify right side
    10,081.70x = 81,905,243.06
  5. Step 5: Solve for x
    x = 81,905,243.06/10,081.70
  6. Step 6: Final answer
    x = 8,124.15

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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.