Home / 18,730.64-28,087.04-5,578.40

Finding the Fourth Proportional to 18,730.64, 28,087.04 and 5,578.40

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Solution

The fourth proportional to 18,730.64, 28,087.04 and 5,578.40 is: 8,364.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.64 : 28,087.04 = 5,578.40 : x
  2. Step 2: Convert to fraction form
    18,730.64/28,087.04 = 5,578.40/x
  3. Step 3: Cross multiply
    18,730.64x = 28,087.04 × 5,578.40
  4. Step 4: Simplify right side
    18,730.64x = 156,680,743.94
  5. Step 5: Solve for x
    x = 156,680,743.94/18,730.64
  6. Step 6: Final answer
    x = 8,364.94

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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.