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Finding the Fourth Proportional to 28,277.81, 42,422.81 and 8,288.93

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Solution

The fourth proportional to 28,277.81, 42,422.81 and 8,288.93 is: 12,435.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,277.81 : 42,422.81 = 8,288.93 : x
  2. Step 2: Convert to fraction form
    28,277.81/42,422.81 = 8,288.93/x
  3. Step 3: Cross multiply
    28,277.81x = 42,422.81 × 8,288.93
  4. Step 4: Simplify right side
    28,277.81x = 351,639,767.11
  5. Step 5: Solve for x
    x = 351,639,767.11/28,277.81
  6. Step 6: Final answer
    x = 12,435.18

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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.