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Finding the Fourth Proportional to 27,892.80, 38,459.60 and 18,946.08

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Solution

The fourth proportional to 27,892.80, 38,459.60 and 18,946.08 is: 26,123.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,892.80 : 38,459.60 = 18,946.08 : x
  2. Step 2: Convert to fraction form
    27,892.80/38,459.60 = 18,946.08/x
  3. Step 3: Cross multiply
    27,892.80x = 38,459.60 × 18,946.08
  4. Step 4: Simplify right side
    27,892.80x = 728,658,658.37
  5. Step 5: Solve for x
    x = 728,658,658.37/27,892.80
  6. Step 6: Final answer
    x = 26,123.54

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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.