Home / 18,319.80-27,479.70-6,631.50

Finding the Fourth Proportional to 18,319.80, 27,479.70 and 6,631.50

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Solution

The fourth proportional to 18,319.80, 27,479.70 and 6,631.50 is: 9,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,319.80 : 27,479.70 = 6,631.50 : x
  2. Step 2: Convert to fraction form
    18,319.80/27,479.70 = 6,631.50/x
  3. Step 3: Cross multiply
    18,319.80x = 27,479.70 × 6,631.50
  4. Step 4: Simplify right side
    18,319.80x = 182,231,630.55
  5. Step 5: Solve for x
    x = 182,231,630.55/18,319.80
  6. Step 6: Final answer
    x = 9,947.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.