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Finding the Fourth Proportional to 16,771,871.80, 25,157,807.70 and 12,740,793.40

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Solution

The fourth proportional to 16,771,871.80, 25,157,807.70 and 12,740,793.40 is: 19,111,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,771,871.80 : 25,157,807.70 = 12,740,793.40 : x
  2. Step 2: Convert to fraction form
    16,771,871.80/25,157,807.70 = 12,740,793.40/x
  3. Step 3: Cross multiply
    16,771,871.80x = 25,157,807.70 × 12,740,793.40
  4. Step 4: Simplify right side
    16,771,871.80x = 320,530,430,302,629.19
  5. Step 5: Solve for x
    x = 320,530,430,302,629.19/16,771,871.80
  6. Step 6: Final answer
    x = 19,111,190.10

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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.