Home / 15,645.47-21,588.66-8,930.66

Finding the Fourth Proportional to 15,645.47, 21,588.66 and 8,930.66

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Solution

The fourth proportional to 15,645.47, 21,588.66 and 8,930.66 is: 12,323.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,645.47 : 21,588.66 = 8,930.66 : x
  2. Step 2: Convert to fraction form
    15,645.47/21,588.66 = 8,930.66/x
  3. Step 3: Cross multiply
    15,645.47x = 21,588.66 × 8,930.66
  4. Step 4: Simplify right side
    15,645.47x = 192,800,874.37
  5. Step 5: Solve for x
    x = 192,800,874.37/15,645.47
  6. Step 6: Final answer
    x = 12,323.12

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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.