Home / 10,219.12-15,239.26-10,125.70

Finding the Fourth Proportional to 10,219.12, 15,239.26 and 10,125.70

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Solution

The fourth proportional to 10,219.12, 15,239.26 and 10,125.70 is: 15,099.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,219.12 : 15,239.26 = 10,125.70 : x
  2. Step 2: Convert to fraction form
    10,219.12/15,239.26 = 10,125.70/x
  3. Step 3: Cross multiply
    10,219.12x = 15,239.26 × 10,125.70
  4. Step 4: Simplify right side
    10,219.12x = 154,308,174.98
  5. Step 5: Solve for x
    x = 154,308,174.98/10,219.12
  6. Step 6: Final answer
    x = 15,099.95

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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.