Home / 42,290.46-63,430.62-11,128.14

Finding the Fourth Proportional to 42,290.46, 63,430.62 and 11,128.14

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Solution

The fourth proportional to 42,290.46, 63,430.62 and 11,128.14 is: 16,690.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,290.46 : 63,430.62 = 11,128.14 : x
  2. Step 2: Convert to fraction form
    42,290.46/63,430.62 = 11,128.14/x
  3. Step 3: Cross multiply
    42,290.46x = 63,430.62 × 11,128.14
  4. Step 4: Simplify right side
    42,290.46x = 705,864,819.65
  5. Step 5: Solve for x
    x = 705,864,819.65/42,290.46
  6. Step 6: Final answer
    x = 16,690.88

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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.