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Finding the Fourth Proportional to 13,602.74, 20,400.78 and 10,633.83

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Solution

The fourth proportional to 13,602.74, 20,400.78 and 10,633.83 is: 15,948.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,602.74 : 20,400.78 = 10,633.83 : x
  2. Step 2: Convert to fraction form
    13,602.74/20,400.78 = 10,633.83/x
  3. Step 3: Cross multiply
    13,602.74x = 20,400.78 × 10,633.83
  4. Step 4: Simplify right side
    13,602.74x = 216,938,426.39
  5. Step 5: Solve for x
    x = 216,938,426.39/13,602.74
  6. Step 6: Final answer
    x = 15,948.14

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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.