Home / 13,309.57-19,960.95-3,947.40

Finding the Fourth Proportional to 13,309.57, 19,960.95 and 3,947.40

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Solution

The fourth proportional to 13,309.57, 19,960.95 and 3,947.40 is: 5,920.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.57 : 19,960.95 = 3,947.40 : x
  2. Step 2: Convert to fraction form
    13,309.57/19,960.95 = 3,947.40/x
  3. Step 3: Cross multiply
    13,309.57x = 19,960.95 × 3,947.40
  4. Step 4: Simplify right side
    13,309.57x = 78,793,834.29
  5. Step 5: Solve for x
    x = 78,793,834.29/13,309.57
  6. Step 6: Final answer
    x = 5,920.09

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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.