Home / 35,422.20-53,133.30-20,647.80

Finding the Fourth Proportional to 35,422.20, 53,133.30 and 20,647.80

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Solution

The fourth proportional to 35,422.20, 53,133.30 and 20,647.80 is: 30,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,422.20 : 53,133.30 = 20,647.80 : x
  2. Step 2: Convert to fraction form
    35,422.20/53,133.30 = 20,647.80/x
  3. Step 3: Cross multiply
    35,422.20x = 53,133.30 × 20,647.80
  4. Step 4: Simplify right side
    35,422.20x = 1,097,085,751.74
  5. Step 5: Solve for x
    x = 1,097,085,751.74/35,422.20
  6. Step 6: Final answer
    x = 30,971.70

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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.