Home / 42,509.90-63,770.75-18,815.57

Finding the Fourth Proportional to 42,509.90, 63,770.75 and 18,815.57

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Solution

The fourth proportional to 42,509.90, 63,770.75 and 18,815.57 is: 28,225.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,509.90 : 63,770.75 = 18,815.57 : x
  2. Step 2: Convert to fraction form
    42,509.90/63,770.75 = 18,815.57/x
  3. Step 3: Cross multiply
    42,509.90x = 63,770.75 × 18,815.57
  4. Step 4: Simplify right side
    42,509.90x = 1,199,882,597.65
  5. Step 5: Solve for x
    x = 1,199,882,597.65/42,509.90
  6. Step 6: Final answer
    x = 28,225.96

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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.