Home / 18,947.60-28,412.75-9,091.52

Finding the Fourth Proportional to 18,947.60, 28,412.75 and 9,091.52

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Solution

The fourth proportional to 18,947.60, 28,412.75 and 9,091.52 is: 13,633.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.60 : 28,412.75 = 9,091.52 : x
  2. Step 2: Convert to fraction form
    18,947.60/28,412.75 = 9,091.52/x
  3. Step 3: Cross multiply
    18,947.60x = 28,412.75 × 9,091.52
  4. Step 4: Simplify right side
    18,947.60x = 258,314,965.55
  5. Step 5: Solve for x
    x = 258,314,965.55/18,947.60
  6. Step 6: Final answer
    x = 13,633.13

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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.