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Finding the Fourth Proportional to 15,089.68, 20,823.51 and 8,375.32

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Solution

The fourth proportional to 15,089.68, 20,823.51 and 8,375.32 is: 11,557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,089.68 : 20,823.51 = 8,375.32 : x
  2. Step 2: Convert to fraction form
    15,089.68/20,823.51 = 8,375.32/x
  3. Step 3: Cross multiply
    15,089.68x = 20,823.51 × 8,375.32
  4. Step 4: Simplify right side
    15,089.68x = 174,403,559.77
  5. Step 5: Solve for x
    x = 174,403,559.77/15,089.68
  6. Step 6: Final answer
    x = 11,557.80

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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.