Home / 42,212.16-63,286.78-14,115.60

Finding the Fourth Proportional to 42,212.16, 63,286.78 and 14,115.60

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Solution

The fourth proportional to 42,212.16, 63,286.78 and 14,115.60 is: 21,162.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,212.16 : 63,286.78 = 14,115.60 : x
  2. Step 2: Convert to fraction form
    42,212.16/63,286.78 = 14,115.60/x
  3. Step 3: Cross multiply
    42,212.16x = 63,286.78 × 14,115.60
  4. Step 4: Simplify right side
    42,212.16x = 893,330,871.77
  5. Step 5: Solve for x
    x = 893,330,871.77/42,212.16
  6. Step 6: Final answer
    x = 21,162.88

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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.