Home / 21,062,980.80-31,594,471.20-18,228,628.80

Finding the Fourth Proportional to 21,062,980.80, 31,594,471.20 and 18,228,628.80

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Solution

The fourth proportional to 21,062,980.80, 31,594,471.20 and 18,228,628.80 is: 27,342,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062,980.80 : 31,594,471.20 = 18,228,628.80 : x
  2. Step 2: Convert to fraction form
    21,062,980.80/31,594,471.20 = 18,228,628.80/x
  3. Step 3: Cross multiply
    21,062,980.80x = 31,594,471.20 × 18,228,628.80
  4. Step 4: Simplify right side
    21,062,980.80x = 575,923,887,637,090.62
  5. Step 5: Solve for x
    x = 575,923,887,637,090.62/21,062,980.80
  6. Step 6: Final answer
    x = 27,342,943.20

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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.