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Finding the Fourth Proportional to 10,676.76, 15,921.03 and 9,938.04

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Solution

The fourth proportional to 10,676.76, 15,921.03 and 9,938.04 is: 14,819.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,676.76 : 15,921.03 = 9,938.04 : x
  2. Step 2: Convert to fraction form
    10,676.76/15,921.03 = 9,938.04/x
  3. Step 3: Cross multiply
    10,676.76x = 15,921.03 × 9,938.04
  4. Step 4: Simplify right side
    10,676.76x = 158,223,832.98
  5. Step 5: Solve for x
    x = 158,223,832.98/10,676.76
  6. Step 6: Final answer
    x = 14,819.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.