Home / 18,580.39-27,870.55-5,432.74

Finding the Fourth Proportional to 18,580.39, 27,870.55 and 5,432.74

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Solution

The fourth proportional to 18,580.39, 27,870.55 and 5,432.74 is: 8,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,580.39 : 27,870.55 = 5,432.74 : x
  2. Step 2: Convert to fraction form
    18,580.39/27,870.55 = 5,432.74/x
  3. Step 3: Cross multiply
    18,580.39x = 27,870.55 × 5,432.74
  4. Step 4: Simplify right side
    18,580.39x = 151,413,368.55
  5. Step 5: Solve for x
    x = 151,413,368.55/18,580.39
  6. Step 6: Final answer
    x = 8,149.10

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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.