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Finding the Fourth Proportional to 18,000.60, 26,988.09 and 6,897.90

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Solution

The fourth proportional to 18,000.60, 26,988.09 and 6,897.90 is: 10,341.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000.60 : 26,988.09 = 6,897.90 : x
  2. Step 2: Convert to fraction form
    18,000.60/26,988.09 = 6,897.90/x
  3. Step 3: Cross multiply
    18,000.60x = 26,988.09 × 6,897.90
  4. Step 4: Simplify right side
    18,000.60x = 186,161,146.01
  5. Step 5: Solve for x
    x = 186,161,146.01/18,000.60
  6. Step 6: Final answer
    x = 10,341.94

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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.