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Finding the Fourth Proportional to 11,873.79, 16,389.54 and 7,394.90

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Solution

The fourth proportional to 11,873.79, 16,389.54 and 7,394.90 is: 10,207.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,873.79 : 16,389.54 = 7,394.90 : x
  2. Step 2: Convert to fraction form
    11,873.79/16,389.54 = 7,394.90/x
  3. Step 3: Cross multiply
    11,873.79x = 16,389.54 × 7,394.90
  4. Step 4: Simplify right side
    11,873.79x = 121,198,927.40
  5. Step 5: Solve for x
    x = 121,198,927.40/11,873.79
  6. Step 6: Final answer
    x = 10,207.27

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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.