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Finding the Fourth Proportional to 10,890,468.80, 16,335,703.20 and 9,714,737.60

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Solution

The fourth proportional to 10,890,468.80, 16,335,703.20 and 9,714,737.60 is: 14,572,106.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890,468.80 : 16,335,703.20 = 9,714,737.60 : x
  2. Step 2: Convert to fraction form
    10,890,468.80/16,335,703.20 = 9,714,737.60/x
  3. Step 3: Cross multiply
    10,890,468.80x = 16,335,703.20 × 9,714,737.60
  4. Step 4: Simplify right side
    10,890,468.80x = 158,697,070,099,480.31
  5. Step 5: Solve for x
    x = 158,697,070,099,480.31/10,890,468.80
  6. Step 6: Final answer
    x = 14,572,106.40

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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.