Home / 12,220.29-16,858.28-7,184.43

Finding the Fourth Proportional to 12,220.29, 16,858.28 and 7,184.43

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Solution

The fourth proportional to 12,220.29, 16,858.28 and 7,184.43 is: 9,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.29 : 16,858.28 = 7,184.43 : x
  2. Step 2: Convert to fraction form
    12,220.29/16,858.28 = 7,184.43/x
  3. Step 3: Cross multiply
    12,220.29x = 16,858.28 × 7,184.43
  4. Step 4: Simplify right side
    12,220.29x = 121,117,150.54
  5. Step 5: Solve for x
    x = 121,117,150.54/12,220.29
  6. Step 6: Final answer
    x = 9,911.15

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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.