Home / 18,206.76-25,112.22-12,840.24

Finding the Fourth Proportional to 18,206.76, 25,112.22 and 12,840.24

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Solution

The fourth proportional to 18,206.76, 25,112.22 and 12,840.24 is: 17,710.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,206.76 : 25,112.22 = 12,840.24 : x
  2. Step 2: Convert to fraction form
    18,206.76/25,112.22 = 12,840.24/x
  3. Step 3: Cross multiply
    18,206.76x = 25,112.22 × 12,840.24
  4. Step 4: Simplify right side
    18,206.76x = 322,446,931.73
  5. Step 5: Solve for x
    x = 322,446,931.73/18,206.76
  6. Step 6: Final answer
    x = 17,710.29

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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.