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Finding the Fourth Proportional to 18,859.33, 28,292.05 and 6,380.10

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Solution

The fourth proportional to 18,859.33, 28,292.05 and 6,380.10 is: 9,571.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.33 : 28,292.05 = 6,380.10 : x
  2. Step 2: Convert to fraction form
    18,859.33/28,292.05 = 6,380.10/x
  3. Step 3: Cross multiply
    18,859.33x = 28,292.05 × 6,380.10
  4. Step 4: Simplify right side
    18,859.33x = 180,506,116.18
  5. Step 5: Solve for x
    x = 180,506,116.18/18,859.33
  6. Step 6: Final answer
    x = 9,571.18

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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.