Home / 13,731,564.40-18,950,446.40-7,619,992.88

Finding the Fourth Proportional to 13,731,564.40, 18,950,446.40 and 7,619,992.88

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Solution

The fourth proportional to 13,731,564.40, 18,950,446.40 and 7,619,992.88 is: 10,516,082.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731,564.40 : 18,950,446.40 = 7,619,992.88 : x
  2. Step 2: Convert to fraction form
    13,731,564.40/18,950,446.40 = 7,619,992.88/x
  3. Step 3: Cross multiply
    13,731,564.40x = 18,950,446.40 × 7,619,992.88
  4. Step 4: Simplify right side
    13,731,564.40x = 144,402,266,640,821.62
  5. Step 5: Solve for x
    x = 144,402,266,640,821.62/13,731,564.40
  6. Step 6: Final answer
    x = 10,516,082.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.