Home / 20,913,837.64-28,860,520.02-11,621,167.72

Finding the Fourth Proportional to 20,913,837.64, 28,860,520.02 and 11,621,167.72

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Solution

The fourth proportional to 20,913,837.64, 28,860,520.02 and 11,621,167.72 is: 16,036,891.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913,837.64 : 28,860,520.02 = 11,621,167.72 : x
  2. Step 2: Convert to fraction form
    20,913,837.64/28,860,520.02 = 11,621,167.72/x
  3. Step 3: Cross multiply
    20,913,837.64x = 28,860,520.02 × 11,621,167.72
  4. Step 4: Simplify right side
    20,913,837.64x = 335,392,943,638,837.75
  5. Step 5: Solve for x
    x = 335,392,943,638,837.75/20,913,837.64
  6. Step 6: Final answer
    x = 16,036,891.43

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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.