Home / 20,980.23-31,470.54-5,987.33

Finding the Fourth Proportional to 20,980.23, 31,470.54 and 5,987.33

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Solution

The fourth proportional to 20,980.23, 31,470.54 and 5,987.33 is: 8,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.23 : 31,470.54 = 5,987.33 : x
  2. Step 2: Convert to fraction form
    20,980.23/31,470.54 = 5,987.33/x
  3. Step 3: Cross multiply
    20,980.23x = 31,470.54 × 5,987.33
  4. Step 4: Simplify right side
    20,980.23x = 188,424,508.26
  5. Step 5: Solve for x
    x = 188,424,508.26/20,980.23
  6. Step 6: Final answer
    x = 8,981.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.