Home / 42,508.40-63,768.50-18,814.07

Finding the Fourth Proportional to 42,508.40, 63,768.50 and 18,814.07

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Solution

The fourth proportional to 42,508.40, 63,768.50 and 18,814.07 is: 28,223.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,508.40 : 63,768.50 = 18,814.07 : x
  2. Step 2: Convert to fraction form
    42,508.40/63,768.50 = 18,814.07/x
  3. Step 3: Cross multiply
    42,508.40x = 63,768.50 × 18,814.07
  4. Step 4: Simplify right side
    42,508.40x = 1,199,744,609.88
  5. Step 5: Solve for x
    x = 1,199,744,609.88/42,508.40
  6. Step 6: Final answer
    x = 28,223.71

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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.