Home / 13,769,147.70-20,653,721.55-12,281,112.90

Finding the Fourth Proportional to 13,769,147.70, 20,653,721.55 and 12,281,112.90

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Solution

The fourth proportional to 13,769,147.70, 20,653,721.55 and 12,281,112.90 is: 18,421,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769,147.70 : 20,653,721.55 = 12,281,112.90 : x
  2. Step 2: Convert to fraction form
    13,769,147.70/20,653,721.55 = 12,281,112.90/x
  3. Step 3: Cross multiply
    13,769,147.70x = 20,653,721.55 × 12,281,112.90
  4. Step 4: Simplify right side
    13,769,147.70x = 253,650,686,160,713
  5. Step 5: Solve for x
    x = 253,650,686,160,713/13,769,147.70
  6. Step 6: Final answer
    x = 18,421,669.35

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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.