Home / 13,146,751.20-19,720,126.80-8,081,637.60

Finding the Fourth Proportional to 13,146,751.20, 19,720,126.80 and 8,081,637.60

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Solution

The fourth proportional to 13,146,751.20, 19,720,126.80 and 8,081,637.60 is: 12,122,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146,751.20 : 19,720,126.80 = 8,081,637.60 : x
  2. Step 2: Convert to fraction form
    13,146,751.20/19,720,126.80 = 8,081,637.60/x
  3. Step 3: Cross multiply
    13,146,751.20x = 19,720,126.80 × 8,081,637.60
  4. Step 4: Simplify right side
    13,146,751.20x = 159,370,918,223,647.69
  5. Step 5: Solve for x
    x = 159,370,918,223,647.69/13,146,751.20
  6. Step 6: Final answer
    x = 12,122,456.40

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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.