Home / 15,701.09-21,650.22-13,309.97

Finding the Fourth Proportional to 15,701.09, 21,650.22 and 13,309.97

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Solution

The fourth proportional to 15,701.09, 21,650.22 and 13,309.97 is: 18,353.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.09 : 21,650.22 = 13,309.97 : x
  2. Step 2: Convert to fraction form
    15,701.09/21,650.22 = 13,309.97/x
  3. Step 3: Cross multiply
    15,701.09x = 21,650.22 × 13,309.97
  4. Step 4: Simplify right side
    15,701.09x = 288,163,670.44
  5. Step 5: Solve for x
    x = 288,163,670.44/15,701.09
  6. Step 6: Final answer
    x = 18,353.11

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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.