Home / 20,632.39-28,477.38-13,089.13

Finding the Fourth Proportional to 20,632.39, 28,477.38 and 13,089.13

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Solution

The fourth proportional to 20,632.39, 28,477.38 and 13,089.13 is: 18,065.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.39 : 28,477.38 = 13,089.13 : x
  2. Step 2: Convert to fraction form
    20,632.39/28,477.38 = 13,089.13/x
  3. Step 3: Cross multiply
    20,632.39x = 28,477.38 × 13,089.13
  4. Step 4: Simplify right side
    20,632.39x = 372,744,128.88
  5. Step 5: Solve for x
    x = 372,744,128.88/20,632.39
  6. Step 6: Final answer
    x = 18,065.97

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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.