Home / 20,667.65-28,516.66-11,713.10

Finding the Fourth Proportional to 20,667.65, 28,516.66 and 11,713.10

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Solution

The fourth proportional to 20,667.65, 28,516.66 and 11,713.10 is: 16,161.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.65 : 28,516.66 = 11,713.10 : x
  2. Step 2: Convert to fraction form
    20,667.65/28,516.66 = 11,713.10/x
  3. Step 3: Cross multiply
    20,667.65x = 28,516.66 × 11,713.10
  4. Step 4: Simplify right side
    20,667.65x = 334,018,318.38
  5. Step 5: Solve for x
    x = 334,018,318.38/20,667.65
  6. Step 6: Final answer
    x = 16,161.41

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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.