Home / 18,717.05-25,808.55-12,752.21

Finding the Fourth Proportional to 18,717.05, 25,808.55 and 12,752.21

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Solution

The fourth proportional to 18,717.05, 25,808.55 and 12,752.21 is: 17,583.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.05 : 25,808.55 = 12,752.21 : x
  2. Step 2: Convert to fraction form
    18,717.05/25,808.55 = 12,752.21/x
  3. Step 3: Cross multiply
    18,717.05x = 25,808.55 × 12,752.21
  4. Step 4: Simplify right side
    18,717.05x = 329,116,049.40
  5. Step 5: Solve for x
    x = 329,116,049.40/18,717.05
  6. Step 6: Final answer
    x = 17,583.76

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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.