Home / 21,139,092.40-29,170,165.80-11,720,134.72

Finding the Fourth Proportional to 21,139,092.40, 29,170,165.80 and 11,720,134.72

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Solution

The fourth proportional to 21,139,092.40, 29,170,165.80 and 11,720,134.72 is: 16,172,798.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139,092.40 : 29,170,165.80 = 11,720,134.72 : x
  2. Step 2: Convert to fraction form
    21,139,092.40/29,170,165.80 = 11,720,134.72/x
  3. Step 3: Cross multiply
    21,139,092.40x = 29,170,165.80 × 11,720,134.72
  4. Step 4: Simplify right side
    21,139,092.40x = 341,878,272,980,736.62
  5. Step 5: Solve for x
    x = 341,878,272,980,736.62/21,139,092.40
  6. Step 6: Final answer
    x = 16,172,798.08

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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.