Home / 30,119.88-45,221.22-15,338.76

Finding the Fourth Proportional to 30,119.88, 45,221.22 and 15,338.76

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Solution

The fourth proportional to 30,119.88, 45,221.22 and 15,338.76 is: 23,029.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,119.88 : 45,221.22 = 15,338.76 : x
  2. Step 2: Convert to fraction form
    30,119.88/45,221.22 = 15,338.76/x
  3. Step 3: Cross multiply
    30,119.88x = 45,221.22 × 15,338.76
  4. Step 4: Simplify right side
    30,119.88x = 693,637,440.49
  5. Step 5: Solve for x
    x = 693,637,440.49/30,119.88
  6. Step 6: Final answer
    x = 23,029.22

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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.