Home / 18,690,390-25,792,588.08-10,850,629.68

Finding the Fourth Proportional to 18,690,390, 25,792,588.08 and 10,850,629.68

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Solution

The fourth proportional to 18,690,390, 25,792,588.08 and 10,850,629.68 is: 14,973,781.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690,390 : 25,792,588.08 = 10,850,629.68 : x
  2. Step 2: Convert to fraction form
    18,690,390/25,792,588.08 = 10,850,629.68/x
  3. Step 3: Cross multiply
    18,690,390x = 25,792,588.08 × 10,850,629.68
  4. Step 4: Simplify right side
    18,690,390x = 279,865,821,744,862.19
  5. Step 5: Solve for x
    x = 279,865,821,744,862.19/18,690,390
  6. Step 6: Final answer
    x = 14,973,781.81

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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.