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Finding the Fourth Proportional to 10,552,820.80, 15,810,568.80 and 8,947,854.40

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Solution

The fourth proportional to 10,552,820.80, 15,810,568.80 and 8,947,854.40 is: 13,405,957.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,552,820.80 : 15,810,568.80 = 8,947,854.40 : x
  2. Step 2: Convert to fraction form
    10,552,820.80/15,810,568.80 = 8,947,854.40/x
  3. Step 3: Cross multiply
    10,552,820.80x = 15,810,568.80 × 8,947,854.40
  4. Step 4: Simplify right side
    10,552,820.80x = 141,470,667,603,582.72
  5. Step 5: Solve for x
    x = 141,470,667,603,582.72/10,552,820.80
  6. Step 6: Final answer
    x = 13,405,957.54

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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.