Home / 15,285.39-21,095.52-8,571.66

Finding the Fourth Proportional to 15,285.39, 21,095.52 and 8,571.66

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Solution

The fourth proportional to 15,285.39, 21,095.52 and 8,571.66 is: 11,829.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.39 : 21,095.52 = 8,571.66 : x
  2. Step 2: Convert to fraction form
    15,285.39/21,095.52 = 8,571.66/x
  3. Step 3: Cross multiply
    15,285.39x = 21,095.52 × 8,571.66
  4. Step 4: Simplify right side
    15,285.39x = 180,823,624.96
  5. Step 5: Solve for x
    x = 180,823,624.96/15,285.39
  6. Step 6: Final answer
    x = 11,829.83

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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.