Home / 49,429.12-74,143.07-11,989.50

Finding the Fourth Proportional to 49,429.12, 74,143.07 and 11,989.50

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Solution

The fourth proportional to 49,429.12, 74,143.07 and 11,989.50 is: 17,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,429.12 : 74,143.07 = 11,989.50 : x
  2. Step 2: Convert to fraction form
    49,429.12/74,143.07 = 11,989.50/x
  3. Step 3: Cross multiply
    49,429.12x = 74,143.07 × 11,989.50
  4. Step 4: Simplify right side
    49,429.12x = 888,938,277.82
  5. Step 5: Solve for x
    x = 888,938,277.82/49,429.12
  6. Step 6: Final answer
    x = 17,984.10

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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.