Home / 20,453.52-30,678.84-5,459.49

Finding the Fourth Proportional to 20,453.52, 30,678.84 and 5,459.49

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Solution

The fourth proportional to 20,453.52, 30,678.84 and 5,459.49 is: 8,188.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.52 : 30,678.84 = 5,459.49 : x
  2. Step 2: Convert to fraction form
    20,453.52/30,678.84 = 5,459.49/x
  3. Step 3: Cross multiply
    20,453.52x = 30,678.84 × 5,459.49
  4. Step 4: Simplify right side
    20,453.52x = 167,490,820.19
  5. Step 5: Solve for x
    x = 167,490,820.19/20,453.52
  6. Step 6: Final answer
    x = 8,188.85

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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.