Home / 15,220.53-21,004.25-8,506.17

Finding the Fourth Proportional to 15,220.53, 21,004.25 and 8,506.17

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Solution

The fourth proportional to 15,220.53, 21,004.25 and 8,506.17 is: 11,738.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.53 : 21,004.25 = 8,506.17 : x
  2. Step 2: Convert to fraction form
    15,220.53/21,004.25 = 8,506.17/x
  3. Step 3: Cross multiply
    15,220.53x = 21,004.25 × 8,506.17
  4. Step 4: Simplify right side
    15,220.53x = 178,665,678.69
  5. Step 5: Solve for x
    x = 178,665,678.69/15,220.53
  6. Step 6: Final answer
    x = 11,738.47

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Half scale
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Double scale
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Similar ratio
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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.