Home / 20,488,639.24-28,274,312.82-11,321,201.80

Finding the Fourth Proportional to 20,488,639.24, 28,274,312.82 and 11,321,201.80

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Solution

The fourth proportional to 20,488,639.24, 28,274,312.82 and 11,321,201.80 is: 15,623,253.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488,639.24 : 28,274,312.82 = 11,321,201.80 : x
  2. Step 2: Convert to fraction form
    20,488,639.24/28,274,312.82 = 11,321,201.80/x
  3. Step 3: Cross multiply
    20,488,639.24x = 28,274,312.82 × 11,321,201.80
  4. Step 4: Simplify right side
    20,488,639.24x = 320,099,201,191,547.12
  5. Step 5: Solve for x
    x = 320,099,201,191,547.12/20,488,639.24
  6. Step 6: Final answer
    x = 15,623,253.33

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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.