Home / 19,309.41-28,947.65-18,390.87

Finding the Fourth Proportional to 19,309.41, 28,947.65 and 18,390.87

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Solution

The fourth proportional to 19,309.41, 28,947.65 and 18,390.87 is: 27,570.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309.41 : 28,947.65 = 18,390.87 : x
  2. Step 2: Convert to fraction form
    19,309.41/28,947.65 = 18,390.87/x
  3. Step 3: Cross multiply
    19,309.41x = 28,947.65 × 18,390.87
  4. Step 4: Simplify right side
    19,309.41x = 532,372,376.00
  5. Step 5: Solve for x
    x = 532,372,376.00/19,309.41
  6. Step 6: Final answer
    x = 27,570.62

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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.