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Finding the Fourth Proportional to 15,115.10, 22,672.65 and 12,709.40

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Solution

The fourth proportional to 15,115.10, 22,672.65 and 12,709.40 is: 19,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.10 : 22,672.65 = 12,709.40 : x
  2. Step 2: Convert to fraction form
    15,115.10/22,672.65 = 12,709.40/x
  3. Step 3: Cross multiply
    15,115.10x = 22,672.65 × 12,709.40
  4. Step 4: Simplify right side
    15,115.10x = 288,155,777.91
  5. Step 5: Solve for x
    x = 288,155,777.91/15,115.10
  6. Step 6: Final answer
    x = 19,064.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.