Home / 30,011.55-45,015.51-12,481.53

Finding the Fourth Proportional to 30,011.55, 45,015.51 and 12,481.53

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Solution

The fourth proportional to 30,011.55, 45,015.51 and 12,481.53 is: 18,721.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,011.55 : 45,015.51 = 12,481.53 : x
  2. Step 2: Convert to fraction form
    30,011.55/45,015.51 = 12,481.53/x
  3. Step 3: Cross multiply
    30,011.55x = 45,015.51 × 12,481.53
  4. Step 4: Simplify right side
    30,011.55x = 561,862,438.53
  5. Step 5: Solve for x
    x = 561,862,438.53/30,011.55
  6. Step 6: Final answer
    x = 18,721.54

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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.