Home / 20,322.78-28,046.04-11,370.08

Finding the Fourth Proportional to 20,322.78, 28,046.04 and 11,370.08

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Solution

The fourth proportional to 20,322.78, 28,046.04 and 11,370.08 is: 15,691.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.78 : 28,046.04 = 11,370.08 : x
  2. Step 2: Convert to fraction form
    20,322.78/28,046.04 = 11,370.08/x
  3. Step 3: Cross multiply
    20,322.78x = 28,046.04 × 11,370.08
  4. Step 4: Simplify right side
    20,322.78x = 318,885,718.48
  5. Step 5: Solve for x
    x = 318,885,718.48/20,322.78
  6. Step 6: Final answer
    x = 15,691.05

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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.