Home / 15,381.56-21,226.73-8,667.18

Finding the Fourth Proportional to 15,381.56, 21,226.73 and 8,667.18

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Solution

The fourth proportional to 15,381.56, 21,226.73 and 8,667.18 is: 11,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.56 : 21,226.73 = 8,667.18 : x
  2. Step 2: Convert to fraction form
    15,381.56/21,226.73 = 8,667.18/x
  3. Step 3: Cross multiply
    15,381.56x = 21,226.73 × 8,667.18
  4. Step 4: Simplify right side
    15,381.56x = 183,975,846.39
  5. Step 5: Solve for x
    x = 183,975,846.39/15,381.56
  6. Step 6: Final answer
    x = 11,960.80

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Half scale
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Double scale
Find fourth proportional to 15,382.56, 21,228.11 and 8,668.18
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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.