Home / 11,520.60-17,258.75-7,065.28

Finding the Fourth Proportional to 11,520.60, 17,258.75 and 7,065.28

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Solution

The fourth proportional to 11,520.60, 17,258.75 and 7,065.28 is: 10,584.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.60 : 17,258.75 = 7,065.28 : x
  2. Step 2: Convert to fraction form
    11,520.60/17,258.75 = 7,065.28/x
  3. Step 3: Cross multiply
    11,520.60x = 17,258.75 × 7,065.28
  4. Step 4: Simplify right side
    11,520.60x = 121,937,796.99
  5. Step 5: Solve for x
    x = 121,937,796.99/11,520.60
  6. Step 6: Final answer
    x = 10,584.32

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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.