Home / 15,404.64-21,258.40-8,331.06

Finding the Fourth Proportional to 15,404.64, 21,258.40 and 8,331.06

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Solution

The fourth proportional to 15,404.64, 21,258.40 and 8,331.06 is: 11,496.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,404.64 : 21,258.40 = 8,331.06 : x
  2. Step 2: Convert to fraction form
    15,404.64/21,258.40 = 8,331.06/x
  3. Step 3: Cross multiply
    15,404.64x = 21,258.40 × 8,331.06
  4. Step 4: Simplify right side
    15,404.64x = 177,105,005.90
  5. Step 5: Solve for x
    x = 177,105,005.90/15,404.64
  6. Step 6: Final answer
    x = 11,496.86

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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.