Home / 21,084,820.80-31,627,231.20-5,128,468.80

Finding the Fourth Proportional to 21,084,820.80, 31,627,231.20 and 5,128,468.80

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Solution

The fourth proportional to 21,084,820.80, 31,627,231.20 and 5,128,468.80 is: 7,692,703.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084,820.80 : 31,627,231.20 = 5,128,468.80 : x
  2. Step 2: Convert to fraction form
    21,084,820.80/31,627,231.20 = 5,128,468.80/x
  3. Step 3: Cross multiply
    21,084,820.80x = 31,627,231.20 × 5,128,468.80
  4. Step 4: Simplify right side
    21,084,820.80x = 162,199,268,439,586.56
  5. Step 5: Solve for x
    x = 162,199,268,439,586.56/21,084,820.80
  6. Step 6: Final answer
    x = 7,692,703.20

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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.