Home / 20,459.28-30,682.80-7,308.72

Finding the Fourth Proportional to 20,459.28, 30,682.80 and 7,308.72

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Solution

The fourth proportional to 20,459.28, 30,682.80 and 7,308.72 is: 10,960.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.28 : 30,682.80 = 7,308.72 : x
  2. Step 2: Convert to fraction form
    20,459.28/30,682.80 = 7,308.72/x
  3. Step 3: Cross multiply
    20,459.28x = 30,682.80 × 7,308.72
  4. Step 4: Simplify right side
    20,459.28x = 224,251,994.02
  5. Step 5: Solve for x
    x = 224,251,994.02/20,459.28
  6. Step 6: Final answer
    x = 10,960.89

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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.