Home / 12,571.24-18,856.86-4,785.52

Finding the Fourth Proportional to 12,571.24, 18,856.86 and 4,785.52

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Solution

The fourth proportional to 12,571.24, 18,856.86 and 4,785.52 is: 7,178.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.24 : 18,856.86 = 4,785.52 : x
  2. Step 2: Convert to fraction form
    12,571.24/18,856.86 = 4,785.52/x
  3. Step 3: Cross multiply
    12,571.24x = 18,856.86 × 4,785.52
  4. Step 4: Simplify right side
    12,571.24x = 90,239,880.67
  5. Step 5: Solve for x
    x = 90,239,880.67/12,571.24
  6. Step 6: Final answer
    x = 7,178.28

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.