Home / 16,139.22-22,272.41-8,969.79

Finding the Fourth Proportional to 16,139.22, 22,272.41 and 8,969.79

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Solution

The fourth proportional to 16,139.22, 22,272.41 and 8,969.79 is: 12,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,139.22 : 22,272.41 = 8,969.79 : x
  2. Step 2: Convert to fraction form
    16,139.22/22,272.41 = 8,969.79/x
  3. Step 3: Cross multiply
    16,139.22x = 22,272.41 × 8,969.79
  4. Step 4: Simplify right side
    16,139.22x = 199,778,840.49
  5. Step 5: Solve for x
    x = 199,778,840.49/16,139.22
  6. Step 6: Final answer
    x = 12,378.47

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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.