Home / 18,916.39-28,374.49-5,768.72

Finding the Fourth Proportional to 18,916.39, 28,374.49 and 5,768.72

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Solution

The fourth proportional to 18,916.39, 28,374.49 and 5,768.72 is: 8,653.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,916.39 : 28,374.49 = 5,768.72 : x
  2. Step 2: Convert to fraction form
    18,916.39/28,374.49 = 5,768.72/x
  3. Step 3: Cross multiply
    18,916.39x = 28,374.49 × 5,768.72
  4. Step 4: Simplify right side
    18,916.39x = 163,684,487.95
  5. Step 5: Solve for x
    x = 163,684,487.95/18,916.39
  6. Step 6: Final answer
    x = 8,653.05

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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.