Home / 30,155.81-45,227.57-11,429.39

Finding the Fourth Proportional to 30,155.81, 45,227.57 and 11,429.39

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Solution

The fourth proportional to 30,155.81, 45,227.57 and 11,429.39 is: 17,141.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.81 : 45,227.57 = 11,429.39 : x
  2. Step 2: Convert to fraction form
    30,155.81/45,227.57 = 11,429.39/x
  3. Step 3: Cross multiply
    30,155.81x = 45,227.57 × 11,429.39
  4. Step 4: Simplify right side
    30,155.81x = 516,923,253.00
  5. Step 5: Solve for x
    x = 516,923,253.00/30,155.81
  6. Step 6: Final answer
    x = 17,141.75

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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.