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Finding the Fourth Proportional to 15,756.40, 23,645.40 and 8,736.40

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Solution

The fourth proportional to 15,756.40, 23,645.40 and 8,736.40 is: 13,110.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.40 : 23,645.40 = 8,736.40 : x
  2. Step 2: Convert to fraction form
    15,756.40/23,645.40 = 8,736.40/x
  3. Step 3: Cross multiply
    15,756.40x = 23,645.40 × 8,736.40
  4. Step 4: Simplify right side
    15,756.40x = 206,575,672.56
  5. Step 5: Solve for x
    x = 206,575,672.56/15,756.40
  6. Step 6: Final answer
    x = 13,110.59

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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.