Home / 10,140.24-15,210.88-3,215.28

Finding the Fourth Proportional to 10,140.24, 15,210.88 and 3,215.28

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Solution

The fourth proportional to 10,140.24, 15,210.88 and 3,215.28 is: 4,823.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.24 : 15,210.88 = 3,215.28 : x
  2. Step 2: Convert to fraction form
    10,140.24/15,210.88 = 3,215.28/x
  3. Step 3: Cross multiply
    10,140.24x = 15,210.88 × 3,215.28
  4. Step 4: Simplify right side
    10,140.24x = 48,907,238.25
  5. Step 5: Solve for x
    x = 48,907,238.25/10,140.24
  6. Step 6: Final answer
    x = 4,823.08

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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.