Home / 18,928.74-28,394.58-5,781.22

Finding the Fourth Proportional to 18,928.74, 28,394.58 and 5,781.22

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Solution

The fourth proportional to 18,928.74, 28,394.58 and 5,781.22 is: 8,672.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.74 : 28,394.58 = 5,781.22 : x
  2. Step 2: Convert to fraction form
    18,928.74/28,394.58 = 5,781.22/x
  3. Step 3: Cross multiply
    18,928.74x = 28,394.58 × 5,781.22
  4. Step 4: Simplify right side
    18,928.74x = 164,155,313.79
  5. Step 5: Solve for x
    x = 164,155,313.79/18,928.74
  6. Step 6: Final answer
    x = 8,672.28

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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.