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Finding the Fourth Proportional to 12,533.60, 18,808.20 and 11,365.71

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Solution

The fourth proportional to 12,533.60, 18,808.20 and 11,365.71 is: 17,055.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,533.60 : 18,808.20 = 11,365.71 : x
  2. Step 2: Convert to fraction form
    12,533.60/18,808.20 = 11,365.71/x
  3. Step 3: Cross multiply
    12,533.60x = 18,808.20 × 11,365.71
  4. Step 4: Simplify right side
    12,533.60x = 213,768,546.82
  5. Step 5: Solve for x
    x = 213,768,546.82/12,533.60
  6. Step 6: Final answer
    x = 17,055.64

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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.