Home / 13,938.48-20,922.30-8,748

Finding the Fourth Proportional to 13,938.48, 20,922.30 and 8,748

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Solution

The fourth proportional to 13,938.48, 20,922.30 and 8,748 is: 13,131.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.48 : 20,922.30 = 8,748 : x
  2. Step 2: Convert to fraction form
    13,938.48/20,922.30 = 8,748/x
  3. Step 3: Cross multiply
    13,938.48x = 20,922.30 × 8,748
  4. Step 4: Simplify right side
    13,938.48x = 183,028,280.40
  5. Step 5: Solve for x
    x = 183,028,280.40/13,938.48
  6. Step 6: Final answer
    x = 13,131.15

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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.