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Finding the Fourth Proportional to 18,632,894.40, 27,932,720.40 and 7,270,700.40

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Solution

The fourth proportional to 18,632,894.40, 27,932,720.40 and 7,270,700.40 is: 10,899,564.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,632,894.40 : 27,932,720.40 = 7,270,700.40 : x
  2. Step 2: Convert to fraction form
    18,632,894.40/27,932,720.40 = 7,270,700.40/x
  3. Step 3: Cross multiply
    18,632,894.40x = 27,932,720.40 × 7,270,700.40
  4. Step 4: Simplify right side
    18,632,894.40x = 203,090,441,385,368.16
  5. Step 5: Solve for x
    x = 203,090,441,385,368.16/18,632,894.40
  6. Step 6: Final answer
    x = 10,899,564.88

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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.