Home / 28,144.19-38,840.20-15,568.94

Finding the Fourth Proportional to 28,144.19, 38,840.20 and 15,568.94

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Solution

The fourth proportional to 28,144.19, 38,840.20 and 15,568.94 is: 21,485.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.19 : 38,840.20 = 15,568.94 : x
  2. Step 2: Convert to fraction form
    28,144.19/38,840.20 = 15,568.94/x
  3. Step 3: Cross multiply
    28,144.19x = 38,840.20 × 15,568.94
  4. Step 4: Simplify right side
    28,144.19x = 604,700,743.39
  5. Step 5: Solve for x
    x = 604,700,743.39/28,144.19
  6. Step 6: Final answer
    x = 21,485.81

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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.