Home / 17,947.50-24,765.21-9,990.06

Finding the Fourth Proportional to 17,947.50, 24,765.21 and 9,990.06

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Solution

The fourth proportional to 17,947.50, 24,765.21 and 9,990.06 is: 13,784.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,947.50 : 24,765.21 = 9,990.06 : x
  2. Step 2: Convert to fraction form
    17,947.50/24,765.21 = 9,990.06/x
  3. Step 3: Cross multiply
    17,947.50x = 24,765.21 × 9,990.06
  4. Step 4: Simplify right side
    17,947.50x = 247,405,933.81
  5. Step 5: Solve for x
    x = 247,405,933.81/17,947.50
  6. Step 6: Final answer
    x = 13,784.98

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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.