Home / 20,739.65-28,623.11-11,542.13

Finding the Fourth Proportional to 20,739.65, 28,623.11 and 11,542.13

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Solution

The fourth proportional to 20,739.65, 28,623.11 and 11,542.13 is: 15,929.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.65 : 28,623.11 = 11,542.13 : x
  2. Step 2: Convert to fraction form
    20,739.65/28,623.11 = 11,542.13/x
  3. Step 3: Cross multiply
    20,739.65x = 28,623.11 × 11,542.13
  4. Step 4: Simplify right side
    20,739.65x = 330,371,563.13
  5. Step 5: Solve for x
    x = 330,371,563.13/20,739.65
  6. Step 6: Final answer
    x = 15,929.47

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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.