Home / 13,920.96-20,881.28-4,693.44

Finding the Fourth Proportional to 13,920.96, 20,881.28 and 4,693.44

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Solution

The fourth proportional to 13,920.96, 20,881.28 and 4,693.44 is: 7,040.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.96 : 20,881.28 = 4,693.44 : x
  2. Step 2: Convert to fraction form
    13,920.96/20,881.28 = 4,693.44/x
  3. Step 3: Cross multiply
    13,920.96x = 20,881.28 × 4,693.44
  4. Step 4: Simplify right side
    13,920.96x = 98,005,034.80
  5. Step 5: Solve for x
    x = 98,005,034.80/13,920.96
  6. Step 6: Final answer
    x = 7,040.11

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1.5x scale

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.