Home / 13,188,720.80-18,209,317.03-8,234,705.92

Finding the Fourth Proportional to 13,188,720.80, 18,209,317.03 and 8,234,705.92

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Solution

The fourth proportional to 13,188,720.80, 18,209,317.03 and 8,234,705.92 is: 11,369,440.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,720.80 : 18,209,317.03 = 8,234,705.92 : x
  2. Step 2: Convert to fraction form
    13,188,720.80/18,209,317.03 = 8,234,705.92/x
  3. Step 3: Cross multiply
    13,188,720.80x = 18,209,317.03 × 8,234,705.92
  4. Step 4: Simplify right side
    13,188,720.80x = 149,948,370,746,097.81
  5. Step 5: Solve for x
    x = 149,948,370,746,097.81/13,188,720.80
  6. Step 6: Final answer
    x = 11,369,440.07

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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.