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Finding the Fourth Proportional to 18,752.63, 28,135.43 and 7,069.19

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Solution

The fourth proportional to 18,752.63, 28,135.43 and 7,069.19 is: 10,606.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.63 : 28,135.43 = 7,069.19 : x
  2. Step 2: Convert to fraction form
    18,752.63/28,135.43 = 7,069.19/x
  3. Step 3: Cross multiply
    18,752.63x = 28,135.43 × 7,069.19
  4. Step 4: Simplify right side
    18,752.63x = 198,894,665.06
  5. Step 5: Solve for x
    x = 198,894,665.06/18,752.63
  6. Step 6: Final answer
    x = 10,606.23

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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.