Home / 21,969,910.80-32,954,866.20-12,989,840.40

Finding the Fourth Proportional to 21,969,910.80, 32,954,866.20 and 12,989,840.40

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Solution

The fourth proportional to 21,969,910.80, 32,954,866.20 and 12,989,840.40 is: 19,484,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969,910.80 : 32,954,866.20 = 12,989,840.40 : x
  2. Step 2: Convert to fraction form
    21,969,910.80/32,954,866.20 = 12,989,840.40/x
  3. Step 3: Cross multiply
    21,969,910.80x = 32,954,866.20 × 12,989,840.40
  4. Step 4: Simplify right side
    21,969,910.80x = 428,078,452,341,354.50
  5. Step 5: Solve for x
    x = 428,078,452,341,354.50/21,969,910.80
  6. Step 6: Final answer
    x = 19,484,760.60

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Similar ratio
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1.5x scale

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.