Home / 21,300,200.40-31,954,966.20-6,920,821.20

Finding the Fourth Proportional to 21,300,200.40, 31,954,966.20 and 6,920,821.20

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Solution

The fourth proportional to 21,300,200.40, 31,954,966.20 and 6,920,821.20 is: 10,382,747.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300,200.40 : 31,954,966.20 = 6,920,821.20 : x
  2. Step 2: Convert to fraction form
    21,300,200.40/31,954,966.20 = 6,920,821.20/x
  3. Step 3: Cross multiply
    21,300,200.40x = 31,954,966.20 × 6,920,821.20
  4. Step 4: Simplify right side
    21,300,200.40x = 221,154,607,522,243.44
  5. Step 5: Solve for x
    x = 221,154,607,522,243.44/21,300,200.40
  6. Step 6: Final answer
    x = 10,382,747.74

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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.