Home / 20,076.34-30,132.88-10,222.42

Finding the Fourth Proportional to 20,076.34, 30,132.88 and 10,222.42

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Solution

The fourth proportional to 20,076.34, 30,132.88 and 10,222.42 is: 15,342.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.34 : 30,132.88 = 10,222.42 : x
  2. Step 2: Convert to fraction form
    20,076.34/30,132.88 = 10,222.42/x
  3. Step 3: Cross multiply
    20,076.34x = 30,132.88 × 10,222.42
  4. Step 4: Simplify right side
    20,076.34x = 308,030,955.17
  5. Step 5: Solve for x
    x = 308,030,955.17/20,076.34
  6. Step 6: Final answer
    x = 15,342.98

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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.