Home / 15,360.08-21,195.16-8,645.57

Finding the Fourth Proportional to 15,360.08, 21,195.16 and 8,645.57

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Solution

The fourth proportional to 15,360.08, 21,195.16 and 8,645.57 is: 11,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360.08 : 21,195.16 = 8,645.57 : x
  2. Step 2: Convert to fraction form
    15,360.08/21,195.16 = 8,645.57/x
  3. Step 3: Cross multiply
    15,360.08x = 21,195.16 × 8,645.57
  4. Step 4: Simplify right side
    15,360.08x = 183,244,239.44
  5. Step 5: Solve for x
    x = 183,244,239.44/15,360.08
  6. Step 6: Final answer
    x = 11,929.90

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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.