Home / 20,763.42-28,653.51-11,812.65

Finding the Fourth Proportional to 20,763.42, 28,653.51 and 11,812.65

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Solution

The fourth proportional to 20,763.42, 28,653.51 and 11,812.65 is: 16,301.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.42 : 28,653.51 = 11,812.65 : x
  2. Step 2: Convert to fraction form
    20,763.42/28,653.51 = 11,812.65/x
  3. Step 3: Cross multiply
    20,763.42x = 28,653.51 × 11,812.65
  4. Step 4: Simplify right side
    20,763.42x = 338,473,884.90
  5. Step 5: Solve for x
    x = 338,473,884.90/20,763.42
  6. Step 6: Final answer
    x = 16,301.45

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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.