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Finding the Fourth Proportional to 23,381.76, 35,022.80 and 18,920.32

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Solution

The fourth proportional to 23,381.76, 35,022.80 and 18,920.32 is: 28,340.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,381.76 : 35,022.80 = 18,920.32 : x
  2. Step 2: Convert to fraction form
    23,381.76/35,022.80 = 18,920.32/x
  3. Step 3: Cross multiply
    23,381.76x = 35,022.80 × 18,920.32
  4. Step 4: Simplify right side
    23,381.76x = 662,642,583.30
  5. Step 5: Solve for x
    x = 662,642,583.30/23,381.76
  6. Step 6: Final answer
    x = 28,340.15

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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.