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Finding the Fourth Proportional to 15,750.05, 21,736.05 and 8,676.47

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Solution

The fourth proportional to 15,750.05, 21,736.05 and 8,676.47 is: 11,974.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,750.05 : 21,736.05 = 8,676.47 : x
  2. Step 2: Convert to fraction form
    15,750.05/21,736.05 = 8,676.47/x
  3. Step 3: Cross multiply
    15,750.05x = 21,736.05 × 8,676.47
  4. Step 4: Simplify right side
    15,750.05x = 188,592,085.28
  5. Step 5: Solve for x
    x = 188,592,085.28/15,750.05
  6. Step 6: Final answer
    x = 11,974.07

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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.