Home / 21,115,672.40-31,736,494.20-20,737,758.80

Finding the Fourth Proportional to 21,115,672.40, 31,736,494.20 and 20,737,758.80

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Solution

The fourth proportional to 21,115,672.40, 31,736,494.20 and 20,737,758.80 is: 31,168,496.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115,672.40 : 31,736,494.20 = 20,737,758.80 : x
  2. Step 2: Convert to fraction form
    21,115,672.40/31,736,494.20 = 20,737,758.80/x
  3. Step 3: Cross multiply
    21,115,672.40x = 31,736,494.20 × 20,737,758.80
  4. Step 4: Simplify right side
    21,115,672.40x = 658,143,761,877,199
  5. Step 5: Solve for x
    x = 658,143,761,877,199/21,115,672.40
  6. Step 6: Final answer
    x = 31,168,496.53

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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.