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Finding the Fourth Proportional to 18,863.76, 28,295.64 and 9,010.02

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Solution

The fourth proportional to 18,863.76, 28,295.64 and 9,010.02 is: 13,515.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.76 : 28,295.64 = 9,010.02 : x
  2. Step 2: Convert to fraction form
    18,863.76/28,295.64 = 9,010.02/x
  3. Step 3: Cross multiply
    18,863.76x = 28,295.64 × 9,010.02
  4. Step 4: Simplify right side
    18,863.76x = 254,944,282.31
  5. Step 5: Solve for x
    x = 254,944,282.31/18,863.76
  6. Step 6: Final answer
    x = 13,515.03

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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.