Home / 15,394.32-21,245.09-8,680.23

Finding the Fourth Proportional to 15,394.32, 21,245.09 and 8,680.23

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Solution

The fourth proportional to 15,394.32, 21,245.09 and 8,680.23 is: 11,979.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,394.32 : 21,245.09 = 8,680.23 : x
  2. Step 2: Convert to fraction form
    15,394.32/21,245.09 = 8,680.23/x
  3. Step 3: Cross multiply
    15,394.32x = 21,245.09 × 8,680.23
  4. Step 4: Simplify right side
    15,394.32x = 184,412,224.17
  5. Step 5: Solve for x
    x = 184,412,224.17/15,394.32
  6. Step 6: Final answer
    x = 11,979.24

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Double scale
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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.