Home / 20,301.99-28,019.81-12,342.68

Finding the Fourth Proportional to 20,301.99, 28,019.81 and 12,342.68

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Solution

The fourth proportional to 20,301.99, 28,019.81 and 12,342.68 is: 17,034.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.99 : 28,019.81 = 12,342.68 : x
  2. Step 2: Convert to fraction form
    20,301.99/28,019.81 = 12,342.68/x
  3. Step 3: Cross multiply
    20,301.99x = 28,019.81 × 12,342.68
  4. Step 4: Simplify right side
    20,301.99x = 345,839,346.68
  5. Step 5: Solve for x
    x = 345,839,346.68/20,301.99
  6. Step 6: Final answer
    x = 17,034.75

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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.