Home / 20,721.26-31,081.12-5,930.16

Finding the Fourth Proportional to 20,721.26, 31,081.12 and 5,930.16

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Solution

The fourth proportional to 20,721.26, 31,081.12 and 5,930.16 is: 8,895.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721.26 : 31,081.12 = 5,930.16 : x
  2. Step 2: Convert to fraction form
    20,721.26/31,081.12 = 5,930.16/x
  3. Step 3: Cross multiply
    20,721.26x = 31,081.12 × 5,930.16
  4. Step 4: Simplify right side
    20,721.26x = 184,316,014.58
  5. Step 5: Solve for x
    x = 184,316,014.58/20,721.26
  6. Step 6: Final answer
    x = 8,895.02

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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.