Home / 38,948.40-58,487.40-21,430.80

Finding the Fourth Proportional to 38,948.40, 58,487.40 and 21,430.80

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Solution

The fourth proportional to 38,948.40, 58,487.40 and 21,430.80 is: 32,181.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,948.40 : 58,487.40 = 21,430.80 : x
  2. Step 2: Convert to fraction form
    38,948.40/58,487.40 = 21,430.80/x
  3. Step 3: Cross multiply
    38,948.40x = 58,487.40 × 21,430.80
  4. Step 4: Simplify right side
    38,948.40x = 1,253,431,771.92
  5. Step 5: Solve for x
    x = 1,253,431,771.92/38,948.40
  6. Step 6: Final answer
    x = 32,181.86

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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.