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Finding the Fourth Proportional to 15,089.64, 20,823.60 and 8,375.04

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Solution

The fourth proportional to 15,089.64, 20,823.60 and 8,375.04 is: 11,557.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,089.64 : 20,823.60 = 8,375.04 : x
  2. Step 2: Convert to fraction form
    15,089.64/20,823.60 = 8,375.04/x
  3. Step 3: Cross multiply
    15,089.64x = 20,823.60 × 8,375.04
  4. Step 4: Simplify right side
    15,089.64x = 174,398,482.94
  5. Step 5: Solve for x
    x = 174,398,482.94/15,089.64
  6. Step 6: Final answer
    x = 11,557.50

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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.