Home / 12,270.27-16,943.81-9,120.99

Finding the Fourth Proportional to 12,270.27, 16,943.81 and 9,120.99

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Solution

The fourth proportional to 12,270.27, 16,943.81 and 9,120.99 is: 12,595.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.27 : 16,943.81 = 9,120.99 : x
  2. Step 2: Convert to fraction form
    12,270.27/16,943.81 = 9,120.99/x
  3. Step 3: Cross multiply
    12,270.27x = 16,943.81 × 9,120.99
  4. Step 4: Simplify right side
    12,270.27x = 154,544,275.97
  5. Step 5: Solve for x
    x = 154,544,275.97/12,270.27
  6. Step 6: Final answer
    x = 12,595.02

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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.