Home / 30,110.55-45,129.95-12,340.49

Finding the Fourth Proportional to 30,110.55, 45,129.95 and 12,340.49

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Solution

The fourth proportional to 30,110.55, 45,129.95 and 12,340.49 is: 18,496.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,110.55 : 45,129.95 = 12,340.49 : x
  2. Step 2: Convert to fraction form
    30,110.55/45,129.95 = 12,340.49/x
  3. Step 3: Cross multiply
    30,110.55x = 45,129.95 × 12,340.49
  4. Step 4: Simplify right side
    30,110.55x = 556,925,747.80
  5. Step 5: Solve for x
    x = 556,925,747.80/30,110.55
  6. Step 6: Final answer
    x = 18,496.03

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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.