Home / 30,221.68-45,281.34-18,510.43

Finding the Fourth Proportional to 30,221.68, 45,281.34 and 18,510.43

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Solution

The fourth proportional to 30,221.68, 45,281.34 and 18,510.43 is: 27,734.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,221.68 : 45,281.34 = 18,510.43 : x
  2. Step 2: Convert to fraction form
    30,221.68/45,281.34 = 18,510.43/x
  3. Step 3: Cross multiply
    30,221.68x = 45,281.34 × 18,510.43
  4. Step 4: Simplify right side
    30,221.68x = 838,177,074.38
  5. Step 5: Solve for x
    x = 838,177,074.38/30,221.68
  6. Step 6: Final answer
    x = 27,734.30

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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.