Home / 13,947.08-20,920.76-3,558.84

Finding the Fourth Proportional to 13,947.08, 20,920.76 and 3,558.84

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Solution

The fourth proportional to 13,947.08, 20,920.76 and 3,558.84 is: 5,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.08 : 20,920.76 = 3,558.84 : x
  2. Step 2: Convert to fraction form
    13,947.08/20,920.76 = 3,558.84/x
  3. Step 3: Cross multiply
    13,947.08x = 20,920.76 × 3,558.84
  4. Step 4: Simplify right side
    13,947.08x = 74,453,637.52
  5. Step 5: Solve for x
    x = 74,453,637.52/13,947.08
  6. Step 6: Final answer
    x = 5,338.30

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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.