Home / 14,947.88-20,631.71-8,663.90

Finding the Fourth Proportional to 14,947.88, 20,631.71 and 8,663.90

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Solution

The fourth proportional to 14,947.88, 20,631.71 and 8,663.90 is: 11,958.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,947.88 : 20,631.71 = 8,663.90 : x
  2. Step 2: Convert to fraction form
    14,947.88/20,631.71 = 8,663.90/x
  3. Step 3: Cross multiply
    14,947.88x = 20,631.71 × 8,663.90
  4. Step 4: Simplify right side
    14,947.88x = 178,750,990.77
  5. Step 5: Solve for x
    x = 178,750,990.77/14,947.88
  6. Step 6: Final answer
    x = 11,958.29

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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.