Home / 13,590,785.40-18,755,272.89-7,479,213.90

Finding the Fourth Proportional to 13,590,785.40, 18,755,272.89 and 7,479,213.90

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Solution

The fourth proportional to 13,590,785.40, 18,755,272.89 and 7,479,213.90 is: 10,321,309.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590,785.40 : 18,755,272.89 = 7,479,213.90 : x
  2. Step 2: Convert to fraction form
    13,590,785.40/18,755,272.89 = 7,479,213.90/x
  3. Step 3: Cross multiply
    13,590,785.40x = 18,755,272.89 × 7,479,213.90
  4. Step 4: Simplify right side
    13,590,785.40x = 140,274,697,697,181.19
  5. Step 5: Solve for x
    x = 140,274,697,697,181.19/13,590,785.40
  6. Step 6: Final answer
    x = 10,321,309.15

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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.