Home / 13,810.92-20,713.40-3,947.55

Finding the Fourth Proportional to 13,810.92, 20,713.40 and 3,947.55

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Solution

The fourth proportional to 13,810.92, 20,713.40 and 3,947.55 is: 5,920.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.92 : 20,713.40 = 3,947.55 : x
  2. Step 2: Convert to fraction form
    13,810.92/20,713.40 = 3,947.55/x
  3. Step 3: Cross multiply
    13,810.92x = 20,713.40 × 3,947.55
  4. Step 4: Simplify right side
    13,810.92x = 81,767,182.17
  5. Step 5: Solve for x
    x = 81,767,182.17/13,810.92
  6. Step 6: Final answer
    x = 5,920.47

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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.