Home / 18,935.39-28,403.16-5,787.71

Finding the Fourth Proportional to 18,935.39, 28,403.16 and 5,787.71

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Solution

The fourth proportional to 18,935.39, 28,403.16 and 5,787.71 is: 8,681.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.39 : 28,403.16 = 5,787.71 : x
  2. Step 2: Convert to fraction form
    18,935.39/28,403.16 = 5,787.71/x
  3. Step 3: Cross multiply
    18,935.39x = 28,403.16 × 5,787.71
  4. Step 4: Simplify right side
    18,935.39x = 164,389,324.17
  5. Step 5: Solve for x
    x = 164,389,324.17/18,935.39
  6. Step 6: Final answer
    x = 8,681.59

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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.