Home / 31,986.20-47,982.90-9,799.40

Finding the Fourth Proportional to 31,986.20, 47,982.90 and 9,799.40

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Solution

The fourth proportional to 31,986.20, 47,982.90 and 9,799.40 is: 14,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.20 : 47,982.90 = 9,799.40 : x
  2. Step 2: Convert to fraction form
    31,986.20/47,982.90 = 9,799.40/x
  3. Step 3: Cross multiply
    31,986.20x = 47,982.90 × 9,799.40
  4. Step 4: Simplify right side
    31,986.20x = 470,203,630.26
  5. Step 5: Solve for x
    x = 470,203,630.26/31,986.20
  6. Step 6: Final answer
    x = 14,700.20

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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.