Home / 30,159.68-45,239.52-20,662.64

Finding the Fourth Proportional to 30,159.68, 45,239.52 and 20,662.64

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Solution

The fourth proportional to 30,159.68, 45,239.52 and 20,662.64 is: 30,993.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,159.68 : 45,239.52 = 20,662.64 : x
  2. Step 2: Convert to fraction form
    30,159.68/45,239.52 = 20,662.64/x
  3. Step 3: Cross multiply
    30,159.68x = 45,239.52 × 20,662.64
  4. Step 4: Simplify right side
    30,159.68x = 934,767,766.82
  5. Step 5: Solve for x
    x = 934,767,766.82/30,159.68
  6. Step 6: Final answer
    x = 30,993.95

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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.