Home / 10,212.40-15,318.72-3,192.10

Finding the Fourth Proportional to 10,212.40, 15,318.72 and 3,192.10

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Solution

The fourth proportional to 10,212.40, 15,318.72 and 3,192.10 is: 4,788.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.40 : 15,318.72 = 3,192.10 : x
  2. Step 2: Convert to fraction form
    10,212.40/15,318.72 = 3,192.10/x
  3. Step 3: Cross multiply
    10,212.40x = 15,318.72 × 3,192.10
  4. Step 4: Simplify right side
    10,212.40x = 48,898,886.11
  5. Step 5: Solve for x
    x = 48,898,886.11/10,212.40
  6. Step 6: Final answer
    x = 4,788.19

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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.