Home / 27,728.36-38,265.04-15,153.12

Finding the Fourth Proportional to 27,728.36, 38,265.04 and 15,153.12

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Solution

The fourth proportional to 27,728.36, 38,265.04 and 15,153.12 is: 20,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.36 : 38,265.04 = 15,153.12 : x
  2. Step 2: Convert to fraction form
    27,728.36/38,265.04 = 15,153.12/x
  3. Step 3: Cross multiply
    27,728.36x = 38,265.04 × 15,153.12
  4. Step 4: Simplify right side
    27,728.36x = 579,834,742.92
  5. Step 5: Solve for x
    x = 579,834,742.92/27,728.36
  6. Step 6: Final answer
    x = 20,911.25

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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.