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Finding the Fourth Proportional to 13,588.65, 18,753.90 and 9,051.09

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Solution

The fourth proportional to 13,588.65, 18,753.90 and 9,051.09 is: 12,491.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.65 : 18,753.90 = 9,051.09 : x
  2. Step 2: Convert to fraction form
    13,588.65/18,753.90 = 9,051.09/x
  3. Step 3: Cross multiply
    13,588.65x = 18,753.90 × 9,051.09
  4. Step 4: Simplify right side
    13,588.65x = 169,743,236.75
  5. Step 5: Solve for x
    x = 169,743,236.75/13,588.65
  6. Step 6: Final answer
    x = 12,491.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.