Home / 13,621.77-18,799.40-9,154.82

Finding the Fourth Proportional to 13,621.77, 18,799.40 and 9,154.82

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Solution

The fourth proportional to 13,621.77, 18,799.40 and 9,154.82 is: 12,634.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.77 : 18,799.40 = 9,154.82 : x
  2. Step 2: Convert to fraction form
    13,621.77/18,799.40 = 9,154.82/x
  3. Step 3: Cross multiply
    13,621.77x = 18,799.40 × 9,154.82
  4. Step 4: Simplify right side
    13,621.77x = 172,105,123.11
  5. Step 5: Solve for x
    x = 172,105,123.11/13,621.77
  6. Step 6: Final answer
    x = 12,634.56

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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.