Home / 12,147.13-16,767.23-7,112.97

Finding the Fourth Proportional to 12,147.13, 16,767.23 and 7,112.97

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Solution

The fourth proportional to 12,147.13, 16,767.23 and 7,112.97 is: 9,818.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.13 : 16,767.23 = 7,112.97 : x
  2. Step 2: Convert to fraction form
    12,147.13/16,767.23 = 7,112.97/x
  3. Step 3: Cross multiply
    12,147.13x = 16,767.23 × 7,112.97
  4. Step 4: Simplify right side
    12,147.13x = 119,264,803.97
  5. Step 5: Solve for x
    x = 119,264,803.97/12,147.13
  6. Step 6: Final answer
    x = 9,818.35

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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.