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Finding the Fourth Proportional to 13,596.73, 18,753.95 and 13,139.51

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Solution

The fourth proportional to 13,596.73, 18,753.95 and 13,139.51 is: 18,123.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,596.73 : 18,753.95 = 13,139.51 : x
  2. Step 2: Convert to fraction form
    13,596.73/18,753.95 = 13,139.51/x
  3. Step 3: Cross multiply
    13,596.73x = 18,753.95 × 13,139.51
  4. Step 4: Simplify right side
    13,596.73x = 246,417,652.64
  5. Step 5: Solve for x
    x = 246,417,652.64/13,596.73
  6. Step 6: Final answer
    x = 18,123.31

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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.