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Finding the Fourth Proportional to 21,993.96, 32,948.40 and 13,677.30

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Solution

The fourth proportional to 21,993.96, 32,948.40 and 13,677.30 is: 20,489.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.96 : 32,948.40 = 13,677.30 : x
  2. Step 2: Convert to fraction form
    21,993.96/32,948.40 = 13,677.30/x
  3. Step 3: Cross multiply
    21,993.96x = 32,948.40 × 13,677.30
  4. Step 4: Simplify right side
    21,993.96x = 450,645,151.32
  5. Step 5: Solve for x
    x = 450,645,151.32/21,993.96
  6. Step 6: Final answer
    x = 20,489.50

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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.