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Finding the Fourth Proportional to 18,580.42, 27,854.20 and 6,885.46

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Solution

The fourth proportional to 18,580.42, 27,854.20 and 6,885.46 is: 10,322.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,580.42 : 27,854.20 = 6,885.46 : x
  2. Step 2: Convert to fraction form
    18,580.42/27,854.20 = 6,885.46/x
  3. Step 3: Cross multiply
    18,580.42x = 27,854.20 × 6,885.46
  4. Step 4: Simplify right side
    18,580.42x = 191,788,979.93
  5. Step 5: Solve for x
    x = 191,788,979.93/18,580.42
  6. Step 6: Final answer
    x = 10,322.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.