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Finding the Fourth Proportional to 12,750.84, 17,595.90 and 7,161.84

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Solution

The fourth proportional to 12,750.84, 17,595.90 and 7,161.84 is: 9,883.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.84 : 17,595.90 = 7,161.84 : x
  2. Step 2: Convert to fraction form
    12,750.84/17,595.90 = 7,161.84/x
  3. Step 3: Cross multiply
    12,750.84x = 17,595.90 × 7,161.84
  4. Step 4: Simplify right side
    12,750.84x = 126,019,020.46
  5. Step 5: Solve for x
    x = 126,019,020.46/12,750.84
  6. Step 6: Final answer
    x = 9,883.19

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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.