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Finding the Fourth Proportional to 22,041.54, 30,420.10 and 13,659.30

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Solution

The fourth proportional to 22,041.54, 30,420.10 and 13,659.30 is: 18,851.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,041.54 : 30,420.10 = 13,659.30 : x
  2. Step 2: Convert to fraction form
    22,041.54/30,420.10 = 13,659.30/x
  3. Step 3: Cross multiply
    22,041.54x = 30,420.10 × 13,659.30
  4. Step 4: Simplify right side
    22,041.54x = 415,517,085.68
  5. Step 5: Solve for x
    x = 415,517,085.68/22,041.54
  6. Step 6: Final answer
    x = 18,851.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.