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Finding the Fourth Proportional to 15,199.68, 20,975.40 and 8,575.68

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Solution

The fourth proportional to 15,199.68, 20,975.40 and 8,575.68 is: 11,834.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,199.68 : 20,975.40 = 8,575.68 : x
  2. Step 2: Convert to fraction form
    15,199.68/20,975.40 = 8,575.68/x
  3. Step 3: Cross multiply
    15,199.68x = 20,975.40 × 8,575.68
  4. Step 4: Simplify right side
    15,199.68x = 179,878,318.27
  5. Step 5: Solve for x
    x = 179,878,318.27/15,199.68
  6. Step 6: Final answer
    x = 11,834.35

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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.