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Finding the Fourth Proportional to 18,804.52, 28,210.92 and 7,117.78

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Solution

The fourth proportional to 18,804.52, 28,210.92 and 7,117.78 is: 10,678.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.52 : 28,210.92 = 7,117.78 : x
  2. Step 2: Convert to fraction form
    18,804.52/28,210.92 = 7,117.78/x
  3. Step 3: Cross multiply
    18,804.52x = 28,210.92 × 7,117.78
  4. Step 4: Simplify right side
    18,804.52x = 200,799,122.16
  5. Step 5: Solve for x
    x = 200,799,122.16/18,804.52
  6. Step 6: Final answer
    x = 10,678.24

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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.