Home / 21,305,659.20-31,971,610.80-9,180,931.20

Finding the Fourth Proportional to 21,305,659.20, 31,971,610.80 and 9,180,931.20

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Solution

The fourth proportional to 21,305,659.20, 31,971,610.80 and 9,180,931.20 is: 13,777,051.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305,659.20 : 31,971,610.80 = 9,180,931.20 : x
  2. Step 2: Convert to fraction form
    21,305,659.20/31,971,610.80 = 9,180,931.20/x
  3. Step 3: Cross multiply
    21,305,659.20x = 31,971,610.80 × 9,180,931.20
  4. Step 4: Simplify right side
    21,305,659.20x = 293,529,159,107,976.94
  5. Step 5: Solve for x
    x = 293,529,159,107,976.94/21,305,659.20
  6. Step 6: Final answer
    x = 13,777,051.27

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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.