Home / 30,156.81-45,238.73-11,450.85

Finding the Fourth Proportional to 30,156.81, 45,238.73 and 11,450.85

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Solution

The fourth proportional to 30,156.81, 45,238.73 and 11,450.85 is: 17,177.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.81 : 45,238.73 = 11,450.85 : x
  2. Step 2: Convert to fraction form
    30,156.81/45,238.73 = 11,450.85/x
  3. Step 3: Cross multiply
    30,156.81x = 45,238.73 × 11,450.85
  4. Step 4: Simplify right side
    30,156.81x = 518,021,854.17
  5. Step 5: Solve for x
    x = 518,021,854.17/30,156.81
  6. Step 6: Final answer
    x = 17,177.61

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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.