Home / 13,081.11-18,050.09-9,889.71

Finding the Fourth Proportional to 13,081.11, 18,050.09 and 9,889.71

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Solution

The fourth proportional to 13,081.11, 18,050.09 and 9,889.71 is: 13,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.11 : 18,050.09 = 9,889.71 : x
  2. Step 2: Convert to fraction form
    13,081.11/18,050.09 = 9,889.71/x
  3. Step 3: Cross multiply
    13,081.11x = 18,050.09 × 9,889.71
  4. Step 4: Simplify right side
    13,081.11x = 178,510,106.13
  5. Step 5: Solve for x
    x = 178,510,106.13/13,081.11
  6. Step 6: Final answer
    x = 13,646.40

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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.