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Finding the Fourth Proportional to 14,975.70, 20,666.61 and 8,261.61

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Solution

The fourth proportional to 14,975.70, 20,666.61 and 8,261.61 is: 11,401.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,975.70 : 20,666.61 = 8,261.61 : x
  2. Step 2: Convert to fraction form
    14,975.70/20,666.61 = 8,261.61/x
  3. Step 3: Cross multiply
    14,975.70x = 20,666.61 × 8,261.61
  4. Step 4: Simplify right side
    14,975.70x = 170,739,471.84
  5. Step 5: Solve for x
    x = 170,739,471.84/14,975.70
  6. Step 6: Final answer
    x = 11,401.10

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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.