Home / 21,851,838.40-32,777,757.60-20,918,864.20

Finding the Fourth Proportional to 21,851,838.40, 32,777,757.60 and 20,918,864.20

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Solution

The fourth proportional to 21,851,838.40, 32,777,757.60 and 20,918,864.20 is: 31,378,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,851,838.40 : 32,777,757.60 = 20,918,864.20 : x
  2. Step 2: Convert to fraction form
    21,851,838.40/32,777,757.60 = 20,918,864.20/x
  3. Step 3: Cross multiply
    21,851,838.40x = 32,777,757.60 × 20,918,864.20
  4. Step 4: Simplify right side
    21,851,838.40x = 685,673,460,014,917.88
  5. Step 5: Solve for x
    x = 685,673,460,014,917.88/21,851,838.40
  6. Step 6: Final answer
    x = 31,378,296.30

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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.