Home / 21,121,901.86-29,201,531.17-15,606,577.84

Finding the Fourth Proportional to 21,121,901.86, 29,201,531.17 and 15,606,577.84

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Solution

The fourth proportional to 21,121,901.86, 29,201,531.17 and 15,606,577.84 is: 21,576,464.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121,901.86 : 29,201,531.17 = 15,606,577.84 : x
  2. Step 2: Convert to fraction form
    21,121,901.86/29,201,531.17 = 15,606,577.84/x
  3. Step 3: Cross multiply
    21,121,901.86x = 29,201,531.17 × 15,606,577.84
  4. Step 4: Simplify right side
    21,121,901.86x = 455,735,969,251,791.31
  5. Step 5: Solve for x
    x = 455,735,969,251,791.31/21,121,901.86
  6. Step 6: Final answer
    x = 21,576,464.67

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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.