Home / 20,215.05-30,277.47-15,500.36

Finding the Fourth Proportional to 20,215.05, 30,277.47 and 15,500.36

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Solution

The fourth proportional to 20,215.05, 30,277.47 and 15,500.36 is: 23,215.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.05 : 30,277.47 = 15,500.36 : x
  2. Step 2: Convert to fraction form
    20,215.05/30,277.47 = 15,500.36/x
  3. Step 3: Cross multiply
    20,215.05x = 30,277.47 × 15,500.36
  4. Step 4: Simplify right side
    20,215.05x = 469,311,533.50
  5. Step 5: Solve for x
    x = 469,311,533.50/20,215.05
  6. Step 6: Final answer
    x = 23,215.95

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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.