Home / 15,415.22-21,275.03-11,447.66

Finding the Fourth Proportional to 15,415.22, 21,275.03 and 11,447.66

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Solution

The fourth proportional to 15,415.22, 21,275.03 and 11,447.66 is: 15,799.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.22 : 21,275.03 = 11,447.66 : x
  2. Step 2: Convert to fraction form
    15,415.22/21,275.03 = 11,447.66/x
  3. Step 3: Cross multiply
    15,415.22x = 21,275.03 × 11,447.66
  4. Step 4: Simplify right side
    15,415.22x = 243,549,309.93
  5. Step 5: Solve for x
    x = 243,549,309.93/15,415.22
  6. Step 6: Final answer
    x = 15,799.28

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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.