Home / 18,947.60-28,429.58-10,172.26

Finding the Fourth Proportional to 18,947.60, 28,429.58 and 10,172.26

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Solution

The fourth proportional to 18,947.60, 28,429.58 and 10,172.26 is: 15,262.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.60 : 28,429.58 = 10,172.26 : x
  2. Step 2: Convert to fraction form
    18,947.60/28,429.58 = 10,172.26/x
  3. Step 3: Cross multiply
    18,947.60x = 28,429.58 × 10,172.26
  4. Step 4: Simplify right side
    18,947.60x = 289,193,079.45
  5. Step 5: Solve for x
    x = 289,193,079.45/18,947.60
  6. Step 6: Final answer
    x = 15,262.78

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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.