Home / 21,969,886.80-32,954,830.20-12,989,816.40

Finding the Fourth Proportional to 21,969,886.80, 32,954,830.20 and 12,989,816.40

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Solution

The fourth proportional to 21,969,886.80, 32,954,830.20 and 12,989,816.40 is: 19,484,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969,886.80 : 32,954,830.20 = 12,989,816.40 : x
  2. Step 2: Convert to fraction form
    21,969,886.80/32,954,830.20 = 12,989,816.40/x
  3. Step 3: Cross multiply
    21,969,886.80x = 32,954,830.20 × 12,989,816.40
  4. Step 4: Simplify right side
    21,969,886.80x = 428,077,193,791,175.31
  5. Step 5: Solve for x
    x = 428,077,193,791,175.31/21,969,886.80
  6. Step 6: Final answer
    x = 19,484,724.60

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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.