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Finding the Fourth Proportional to 15,144.12, 20,898.72 and 8,338.08

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Solution

The fourth proportional to 15,144.12, 20,898.72 and 8,338.08 is: 11,506.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,144.12 : 20,898.72 = 8,338.08 : x
  2. Step 2: Convert to fraction form
    15,144.12/20,898.72 = 8,338.08/x
  3. Step 3: Cross multiply
    15,144.12x = 20,898.72 × 8,338.08
  4. Step 4: Simplify right side
    15,144.12x = 174,255,199.26
  5. Step 5: Solve for x
    x = 174,255,199.26/15,144.12
  6. Step 6: Final answer
    x = 11,506.46

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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.