Home / 21,860,432.70-32,790,649.05-12,790,506.30

Finding the Fourth Proportional to 21,860,432.70, 32,790,649.05 and 12,790,506.30

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Solution

The fourth proportional to 21,860,432.70, 32,790,649.05 and 12,790,506.30 is: 19,185,759.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860,432.70 : 32,790,649.05 = 12,790,506.30 : x
  2. Step 2: Convert to fraction form
    21,860,432.70/32,790,649.05 = 12,790,506.30/x
  3. Step 3: Cross multiply
    21,860,432.70x = 32,790,649.05 × 12,790,506.30
  4. Step 4: Simplify right side
    21,860,432.70x = 419,409,003,255,114.06
  5. Step 5: Solve for x
    x = 419,409,003,255,114.06/21,860,432.70
  6. Step 6: Final answer
    x = 19,185,759.45

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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.