Home / 21,026,143.20-31,529,998.80-9,662,815.20

Finding the Fourth Proportional to 21,026,143.20, 31,529,998.80 and 9,662,815.20

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Solution

The fourth proportional to 21,026,143.20, 31,529,998.80 and 9,662,815.20 is: 14,489,987.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026,143.20 : 31,529,998.80 = 9,662,815.20 : x
  2. Step 2: Convert to fraction form
    21,026,143.20/31,529,998.80 = 9,662,815.20/x
  3. Step 3: Cross multiply
    21,026,143.20x = 31,529,998.80 × 9,662,815.20
  4. Step 4: Simplify right side
    21,026,143.20x = 304,668,551,660,621.75
  5. Step 5: Solve for x
    x = 304,668,551,660,621.75/21,026,143.20
  6. Step 6: Final answer
    x = 14,489,987.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.