Home / 18,935.81-28,403.80-5,788.15

Finding the Fourth Proportional to 18,935.81, 28,403.80 and 5,788.15

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Solution

The fourth proportional to 18,935.81, 28,403.80 and 5,788.15 is: 8,682.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.81 : 28,403.80 = 5,788.15 : x
  2. Step 2: Convert to fraction form
    18,935.81/28,403.80 = 5,788.15/x
  3. Step 3: Cross multiply
    18,935.81x = 28,403.80 × 5,788.15
  4. Step 4: Simplify right side
    18,935.81x = 164,405,454.97
  5. Step 5: Solve for x
    x = 164,405,454.97/18,935.81
  6. Step 6: Final answer
    x = 8,682.25

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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.