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Finding the Fourth Proportional to 18,752.13, 28,134.68 and 7,068.69

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Solution

The fourth proportional to 18,752.13, 28,134.68 and 7,068.69 is: 10,605.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.13 : 28,134.68 = 7,068.69 : x
  2. Step 2: Convert to fraction form
    18,752.13/28,134.68 = 7,068.69/x
  3. Step 3: Cross multiply
    18,752.13x = 28,134.68 × 7,068.69
  4. Step 4: Simplify right side
    18,752.13x = 198,875,295.83
  5. Step 5: Solve for x
    x = 198,875,295.83/18,752.13
  6. Step 6: Final answer
    x = 10,605.48

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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.