Home / 19,962.40-29,943.60-6,812.80

Finding the Fourth Proportional to 19,962.40, 29,943.60 and 6,812.80

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Solution

The fourth proportional to 19,962.40, 29,943.60 and 6,812.80 is: 10,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,962.40 : 29,943.60 = 6,812.80 : x
  2. Step 2: Convert to fraction form
    19,962.40/29,943.60 = 6,812.80/x
  3. Step 3: Cross multiply
    19,962.40x = 29,943.60 × 6,812.80
  4. Step 4: Simplify right side
    19,962.40x = 203,999,758.08
  5. Step 5: Solve for x
    x = 203,999,758.08/19,962.40
  6. Step 6: Final answer
    x = 10,219.20

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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.