Home / 13,421,207.40-18,521,265.12-7,309,635.84

Finding the Fourth Proportional to 13,421,207.40, 18,521,265.12 and 7,309,635.84

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Solution

The fourth proportional to 13,421,207.40, 18,521,265.12 and 7,309,635.84 is: 10,087,296.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421,207.40 : 18,521,265.12 = 7,309,635.84 : x
  2. Step 2: Convert to fraction form
    13,421,207.40/18,521,265.12 = 7,309,635.84/x
  3. Step 3: Cross multiply
    13,421,207.40x = 18,521,265.12 × 7,309,635.84
  4. Step 4: Simplify right side
    13,421,207.40x = 135,383,703,323,293.91
  5. Step 5: Solve for x
    x = 135,383,703,323,293.91/13,421,207.40
  6. Step 6: Final answer
    x = 10,087,296.86

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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.