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Finding the Fourth Proportional to 13,608,701.10, 20,413,051.65 and 7,869,138.30

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Solution

The fourth proportional to 13,608,701.10, 20,413,051.65 and 7,869,138.30 is: 11,803,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,701.10 : 20,413,051.65 = 7,869,138.30 : x
  2. Step 2: Convert to fraction form
    13,608,701.10/20,413,051.65 = 7,869,138.30/x
  3. Step 3: Cross multiply
    13,608,701.10x = 20,413,051.65 × 7,869,138.30
  4. Step 4: Simplify right side
    13,608,701.10x = 160,633,126,558,893.19
  5. Step 5: Solve for x
    x = 160,633,126,558,893.19/13,608,701.10
  6. Step 6: Final answer
    x = 11,803,707.45

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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.