Home / 30,221.45-45,330.80-10,501.55

Finding the Fourth Proportional to 30,221.45, 45,330.80 and 10,501.55

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Solution

The fourth proportional to 30,221.45, 45,330.80 and 10,501.55 is: 15,751.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,221.45 : 45,330.80 = 10,501.55 : x
  2. Step 2: Convert to fraction form
    30,221.45/45,330.80 = 10,501.55/x
  3. Step 3: Cross multiply
    30,221.45x = 45,330.80 × 10,501.55
  4. Step 4: Simplify right side
    30,221.45x = 476,043,723.56
  5. Step 5: Solve for x
    x = 476,043,723.56/30,221.45
  6. Step 6: Final answer
    x = 15,751.85

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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.