Home / 10,275.18-15,415.20-4,428.60

Finding the Fourth Proportional to 10,275.18, 15,415.20 and 4,428.60

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Solution

The fourth proportional to 10,275.18, 15,415.20 and 4,428.60 is: 6,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,275.18 : 15,415.20 = 4,428.60 : x
  2. Step 2: Convert to fraction form
    10,275.18/15,415.20 = 4,428.60/x
  3. Step 3: Cross multiply
    10,275.18x = 15,415.20 × 4,428.60
  4. Step 4: Simplify right side
    10,275.18x = 68,267,754.72
  5. Step 5: Solve for x
    x = 68,267,754.72/10,275.18
  6. Step 6: Final answer
    x = 6,643.95

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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.