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Finding the Fourth Proportional to 23,846.40, 35,769.60 and 19,987.20

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Solution

The fourth proportional to 23,846.40, 35,769.60 and 19,987.20 is: 29,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,846.40 : 35,769.60 = 19,987.20 : x
  2. Step 2: Convert to fraction form
    23,846.40/35,769.60 = 19,987.20/x
  3. Step 3: Cross multiply
    23,846.40x = 35,769.60 × 19,987.20
  4. Step 4: Simplify right side
    23,846.40x = 714,934,149.12
  5. Step 5: Solve for x
    x = 714,934,149.12/23,846.40
  6. Step 6: Final answer
    x = 29,980.80

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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.