Home / 20,922.66-28,873.18-11,362.47

Finding the Fourth Proportional to 20,922.66, 28,873.18 and 11,362.47

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Solution

The fourth proportional to 20,922.66, 28,873.18 and 11,362.47 is: 15,680.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.66 : 28,873.18 = 11,362.47 : x
  2. Step 2: Convert to fraction form
    20,922.66/28,873.18 = 11,362.47/x
  3. Step 3: Cross multiply
    20,922.66x = 28,873.18 × 11,362.47
  4. Step 4: Simplify right side
    20,922.66x = 328,070,749.83
  5. Step 5: Solve for x
    x = 328,070,749.83/20,922.66
  6. Step 6: Final answer
    x = 15,680.16

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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.