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Finding the Fourth Proportional to 19,154,500.40, 28,745,747.40 and 13,485,796.40

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Solution

The fourth proportional to 19,154,500.40, 28,745,747.40 and 13,485,796.40 is: 20,238,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,154,500.40 : 28,745,747.40 = 13,485,796.40 : x
  2. Step 2: Convert to fraction form
    19,154,500.40/28,745,747.40 = 13,485,796.40/x
  3. Step 3: Cross multiply
    19,154,500.40x = 28,745,747.40 × 13,485,796.40
  4. Step 4: Simplify right side
    19,154,500.40x = 387,659,296,802,229.38
  5. Step 5: Solve for x
    x = 387,659,296,802,229.38/19,154,500.40
  6. Step 6: Final answer
    x = 20,238,549.10

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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.