Home / 10,667,746.20-15,977,999.70-8,778,178.20

Finding the Fourth Proportional to 10,667,746.20, 15,977,999.70 and 8,778,178.20

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Solution

The fourth proportional to 10,667,746.20, 15,977,999.70 and 8,778,178.20 is: 13,147,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,667,746.20 : 15,977,999.70 = 8,778,178.20 : x
  2. Step 2: Convert to fraction form
    10,667,746.20/15,977,999.70 = 8,778,178.20/x
  3. Step 3: Cross multiply
    10,667,746.20x = 15,977,999.70 × 8,778,178.20
  4. Step 4: Simplify right side
    10,667,746.20x = 140,257,728,646,146.52
  5. Step 5: Solve for x
    x = 140,257,728,646,146.52/10,667,746.20
  6. Step 6: Final answer
    x = 13,147,831.42

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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.