Home / 13,258.78-19,887.12-7,708.59

Finding the Fourth Proportional to 13,258.78, 19,887.12 and 7,708.59

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Solution

The fourth proportional to 13,258.78, 19,887.12 and 7,708.59 is: 11,562.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.78 : 19,887.12 = 7,708.59 : x
  2. Step 2: Convert to fraction form
    13,258.78/19,887.12 = 7,708.59/x
  3. Step 3: Cross multiply
    13,258.78x = 19,887.12 × 7,708.59
  4. Step 4: Simplify right side
    13,258.78x = 153,301,654.36
  5. Step 5: Solve for x
    x = 153,301,654.36/13,258.78
  6. Step 6: Final answer
    x = 11,562.27

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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.