Home / 12,847.12-17,727.60-7,258.12

Finding the Fourth Proportional to 12,847.12, 17,727.60 and 7,258.12

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Solution

The fourth proportional to 12,847.12, 17,727.60 and 7,258.12 is: 10,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,847.12 : 17,727.60 = 7,258.12 : x
  2. Step 2: Convert to fraction form
    12,847.12/17,727.60 = 7,258.12/x
  3. Step 3: Cross multiply
    12,847.12x = 17,727.60 × 7,258.12
  4. Step 4: Simplify right side
    12,847.12x = 128,669,048.11
  5. Step 5: Solve for x
    x = 128,669,048.11/12,847.12
  6. Step 6: Final answer
    x = 10,015.40

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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.