Home / 19,236.47-28,856.33-5,385.47

Finding the Fourth Proportional to 19,236.47, 28,856.33 and 5,385.47

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Solution

The fourth proportional to 19,236.47, 28,856.33 and 5,385.47 is: 8,078.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,236.47 : 28,856.33 = 5,385.47 : x
  2. Step 2: Convert to fraction form
    19,236.47/28,856.33 = 5,385.47/x
  3. Step 3: Cross multiply
    19,236.47x = 28,856.33 × 5,385.47
  4. Step 4: Simplify right side
    19,236.47x = 155,404,836.53
  5. Step 5: Solve for x
    x = 155,404,836.53/19,236.47
  6. Step 6: Final answer
    x = 8,078.66

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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.