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Finding the Fourth Proportional to 15,084.10, 20,816.06 and 8,797.68

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Solution

The fourth proportional to 15,084.10, 20,816.06 and 8,797.68 is: 12,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,084.10 : 20,816.06 = 8,797.68 : x
  2. Step 2: Convert to fraction form
    15,084.10/20,816.06 = 8,797.68/x
  3. Step 3: Cross multiply
    15,084.10x = 20,816.06 × 8,797.68
  4. Step 4: Simplify right side
    15,084.10x = 183,133,034.74
  5. Step 5: Solve for x
    x = 183,133,034.74/15,084.10
  6. Step 6: Final answer
    x = 12,140.80

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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.