Home / 10,021.20-15,031.80-4,827.60

Finding the Fourth Proportional to 10,021.20, 15,031.80 and 4,827.60

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Solution

The fourth proportional to 10,021.20, 15,031.80 and 4,827.60 is: 7,241.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,021.20 : 15,031.80 = 4,827.60 : x
  2. Step 2: Convert to fraction form
    10,021.20/15,031.80 = 4,827.60/x
  3. Step 3: Cross multiply
    10,021.20x = 15,031.80 × 4,827.60
  4. Step 4: Simplify right side
    10,021.20x = 72,567,517.68
  5. Step 5: Solve for x
    x = 72,567,517.68/10,021.20
  6. Step 6: Final answer
    x = 7,241.40

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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.