Home / 28,151.36-38,846.64-15,575.20

Finding the Fourth Proportional to 28,151.36, 38,846.64 and 15,575.20

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Solution

The fourth proportional to 28,151.36, 38,846.64 and 15,575.20 is: 21,492.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,151.36 : 38,846.64 = 15,575.20 : x
  2. Step 2: Convert to fraction form
    28,151.36/38,846.64 = 15,575.20/x
  3. Step 3: Cross multiply
    28,151.36x = 38,846.64 × 15,575.20
  4. Step 4: Simplify right side
    28,151.36x = 605,044,187.33
  5. Step 5: Solve for x
    x = 605,044,187.33/28,151.36
  6. Step 6: Final answer
    x = 21,492.54

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Half scale
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Double scale
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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.