Home / 10,272.12-15,409.76-4,428.76

Finding the Fourth Proportional to 10,272.12, 15,409.76 and 4,428.76

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Solution

The fourth proportional to 10,272.12, 15,409.76 and 4,428.76 is: 6,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,272.12 : 15,409.76 = 4,428.76 : x
  2. Step 2: Convert to fraction form
    10,272.12/15,409.76 = 4,428.76/x
  3. Step 3: Cross multiply
    10,272.12x = 15,409.76 × 4,428.76
  4. Step 4: Simplify right side
    10,272.12x = 68,246,128.70
  5. Step 5: Solve for x
    x = 68,246,128.70/10,272.12
  6. Step 6: Final answer
    x = 6,643.82

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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.