Home / 10,428.80-15,643.28-4,104.32

Finding the Fourth Proportional to 10,428.80, 15,643.28 and 4,104.32

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Solution

The fourth proportional to 10,428.80, 15,643.28 and 4,104.32 is: 6,156.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.80 : 15,643.28 = 4,104.32 : x
  2. Step 2: Convert to fraction form
    10,428.80/15,643.28 = 4,104.32/x
  3. Step 3: Cross multiply
    10,428.80x = 15,643.28 × 4,104.32
  4. Step 4: Simplify right side
    10,428.80x = 64,204,959.01
  5. Step 5: Solve for x
    x = 64,204,959.01/10,428.80
  6. Step 6: Final answer
    x = 6,156.51

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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.