Home / 9,829.20-14,743.80-5,147.40

Finding the Fourth Proportional to 9,829.20, 14,743.80 and 5,147.40

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Solution

The fourth proportional to 9,829.20, 14,743.80 and 5,147.40 is: 7,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,829.20 : 14,743.80 = 5,147.40 : x
  2. Step 2: Convert to fraction form
    9,829.20/14,743.80 = 5,147.40/x
  3. Step 3: Cross multiply
    9,829.20x = 14,743.80 × 5,147.40
  4. Step 4: Simplify right side
    9,829.20x = 75,892,236.12
  5. Step 5: Solve for x
    x = 75,892,236.12/9,829.20
  6. Step 6: Final answer
    x = 7,721.10

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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.