Home / 12,423.51-18,641.41-9,151.11

Finding the Fourth Proportional to 12,423.51, 18,641.41 and 9,151.11

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Solution

The fourth proportional to 12,423.51, 18,641.41 and 9,151.11 is: 13,731.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.51 : 18,641.41 = 9,151.11 : x
  2. Step 2: Convert to fraction form
    12,423.51/18,641.41 = 9,151.11/x
  3. Step 3: Cross multiply
    12,423.51x = 18,641.41 × 9,151.11
  4. Step 4: Simplify right side
    12,423.51x = 170,589,570.59
  5. Step 5: Solve for x
    x = 170,589,570.59/12,423.51
  6. Step 6: Final answer
    x = 13,731.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.