Home / 12,402.05-18,579.32-11,985.17

Finding the Fourth Proportional to 12,402.05, 18,579.32 and 11,985.17

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Solution

The fourth proportional to 12,402.05, 18,579.32 and 11,985.17 is: 17,954.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402.05 : 18,579.32 = 11,985.17 : x
  2. Step 2: Convert to fraction form
    12,402.05/18,579.32 = 11,985.17/x
  3. Step 3: Cross multiply
    12,402.05x = 18,579.32 × 11,985.17
  4. Step 4: Simplify right side
    12,402.05x = 222,676,248.76
  5. Step 5: Solve for x
    x = 222,676,248.76/12,402.05
  6. Step 6: Final answer
    x = 17,954.79

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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.