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Finding the Fourth Proportional to 10,871.76, 15,003.02 and 5,903.76

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Solution

The fourth proportional to 10,871.76, 15,003.02 and 5,903.76 is: 8,147.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,871.76 : 15,003.02 = 5,903.76 : x
  2. Step 2: Convert to fraction form
    10,871.76/15,003.02 = 5,903.76/x
  3. Step 3: Cross multiply
    10,871.76x = 15,003.02 × 5,903.76
  4. Step 4: Simplify right side
    10,871.76x = 88,574,229.36
  5. Step 5: Solve for x
    x = 88,574,229.36/10,871.76
  6. Step 6: Final answer
    x = 8,147.18

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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.