Home / 19,318.11-28,980.95-6,171.27

Finding the Fourth Proportional to 19,318.11, 28,980.95 and 6,171.27

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Solution

The fourth proportional to 19,318.11, 28,980.95 and 6,171.27 is: 9,258.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318.11 : 28,980.95 = 6,171.27 : x
  2. Step 2: Convert to fraction form
    19,318.11/28,980.95 = 6,171.27/x
  3. Step 3: Cross multiply
    19,318.11x = 28,980.95 × 6,171.27
  4. Step 4: Simplify right side
    19,318.11x = 178,849,236.45
  5. Step 5: Solve for x
    x = 178,849,236.45/19,318.11
  6. Step 6: Final answer
    x = 9,258.11

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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.