Home / 15,220.38-21,002.04-8,505.18

Finding the Fourth Proportional to 15,220.38, 21,002.04 and 8,505.18

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Solution

The fourth proportional to 15,220.38, 21,002.04 and 8,505.18 is: 11,735.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.38 : 21,002.04 = 8,505.18 : x
  2. Step 2: Convert to fraction form
    15,220.38/21,002.04 = 8,505.18/x
  3. Step 3: Cross multiply
    15,220.38x = 21,002.04 × 8,505.18
  4. Step 4: Simplify right side
    15,220.38x = 178,626,130.57
  5. Step 5: Solve for x
    x = 178,626,130.57/15,220.38
  6. Step 6: Final answer
    x = 11,735.98

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Half scale
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Double scale
Find fourth proportional to 15,221.38, 21,003.42 and 8,506.18
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.