Home / 21,172,802.60-31,759,203.90-20,747,649.80

Finding the Fourth Proportional to 21,172,802.60, 31,759,203.90 and 20,747,649.80

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Solution

The fourth proportional to 21,172,802.60, 31,759,203.90 and 20,747,649.80 is: 31,121,474.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172,802.60 : 31,759,203.90 = 20,747,649.80 : x
  2. Step 2: Convert to fraction form
    21,172,802.60/31,759,203.90 = 20,747,649.80/x
  3. Step 3: Cross multiply
    21,172,802.60x = 31,759,203.90 × 20,747,649.80
  4. Step 4: Simplify right side
    21,172,802.60x = 658,928,840,443,994.25
  5. Step 5: Solve for x
    x = 658,928,840,443,994.25/21,172,802.60
  6. Step 6: Final answer
    x = 31,121,474.70

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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.