Home / 15,617.51-21,552.10-8,447.43

Finding the Fourth Proportional to 15,617.51, 21,552.10 and 8,447.43

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Solution

The fourth proportional to 15,617.51, 21,552.10 and 8,447.43 is: 11,657.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.51 : 21,552.10 = 8,447.43 : x
  2. Step 2: Convert to fraction form
    15,617.51/21,552.10 = 8,447.43/x
  3. Step 3: Cross multiply
    15,617.51x = 21,552.10 × 8,447.43
  4. Step 4: Simplify right side
    15,617.51x = 182,059,788.02
  5. Step 5: Solve for x
    x = 182,059,788.02/15,617.51
  6. Step 6: Final answer
    x = 11,657.42

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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.