Home / 13,771,235.10-20,631,969.45-12,178,710.30

Finding the Fourth Proportional to 13,771,235.10, 20,631,969.45 and 12,178,710.30

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Solution

The fourth proportional to 13,771,235.10, 20,631,969.45 and 12,178,710.30 is: 18,246,059.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771,235.10 : 20,631,969.45 = 12,178,710.30 : x
  2. Step 2: Convert to fraction form
    13,771,235.10/20,631,969.45 = 12,178,710.30/x
  3. Step 3: Cross multiply
    13,771,235.10x = 20,631,969.45 × 12,178,710.30
  4. Step 4: Simplify right side
    13,771,235.10x = 251,270,778,850,000.34
  5. Step 5: Solve for x
    x = 251,270,778,850,000.34/13,771,235.10
  6. Step 6: Final answer
    x = 18,246,059.78

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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.