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Finding the Fourth Proportional to 18,402.68, 27,580.88 and 9,968.86

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Solution

The fourth proportional to 18,402.68, 27,580.88 and 9,968.86 is: 14,940.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,402.68 : 27,580.88 = 9,968.86 : x
  2. Step 2: Convert to fraction form
    18,402.68/27,580.88 = 9,968.86/x
  3. Step 3: Cross multiply
    18,402.68x = 27,580.88 × 9,968.86
  4. Step 4: Simplify right side
    18,402.68x = 274,949,931.40
  5. Step 5: Solve for x
    x = 274,949,931.40/18,402.68
  6. Step 6: Final answer
    x = 14,940.75

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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.