Home / 20,606.67-28,358.91-19,721.07

Finding the Fourth Proportional to 20,606.67, 28,358.91 and 19,721.07

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Solution

The fourth proportional to 20,606.67, 28,358.91 and 19,721.07 is: 27,140.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.67 : 28,358.91 = 19,721.07 : x
  2. Step 2: Convert to fraction form
    20,606.67/28,358.91 = 19,721.07/x
  3. Step 3: Cross multiply
    20,606.67x = 28,358.91 × 19,721.07
  4. Step 4: Simplify right side
    20,606.67x = 559,268,049.23
  5. Step 5: Solve for x
    x = 559,268,049.23/20,606.67
  6. Step 6: Final answer
    x = 27,140.15

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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.