Home / 15,258.60-21,064.42-11,643.90

Finding the Fourth Proportional to 15,258.60, 21,064.42 and 11,643.90

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Solution

The fourth proportional to 15,258.60, 21,064.42 and 11,643.90 is: 16,074.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,258.60 : 21,064.42 = 11,643.90 : x
  2. Step 2: Convert to fraction form
    15,258.60/21,064.42 = 11,643.90/x
  3. Step 3: Cross multiply
    15,258.60x = 21,064.42 × 11,643.90
  4. Step 4: Simplify right side
    15,258.60x = 245,272,004.97
  5. Step 5: Solve for x
    x = 245,272,004.97/15,258.60
  6. Step 6: Final answer
    x = 16,074.34

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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.