Home / 21,856,781.87-30,165,004.16-12,439,862.54

Finding the Fourth Proportional to 21,856,781.87, 30,165,004.16 and 12,439,862.54

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Solution

The fourth proportional to 21,856,781.87, 30,165,004.16 and 12,439,862.54 is: 17,168,515.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856,781.87 : 30,165,004.16 = 12,439,862.54 : x
  2. Step 2: Convert to fraction form
    21,856,781.87/30,165,004.16 = 12,439,862.54/x
  3. Step 3: Cross multiply
    21,856,781.87x = 30,165,004.16 × 12,439,862.54
  4. Step 4: Simplify right side
    21,856,781.87x = 375,248,505,268,928.12
  5. Step 5: Solve for x
    x = 375,248,505,268,928.12/21,856,781.87
  6. Step 6: Final answer
    x = 17,168,515.82

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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.