Home / 18,929.11-26,121.34-10,857.01

Finding the Fourth Proportional to 18,929.11, 26,121.34 and 10,857.01

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Solution

The fourth proportional to 18,929.11, 26,121.34 and 10,857.01 is: 14,982.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.11 : 26,121.34 = 10,857.01 : x
  2. Step 2: Convert to fraction form
    18,929.11/26,121.34 = 10,857.01/x
  3. Step 3: Cross multiply
    18,929.11x = 26,121.34 × 10,857.01
  4. Step 4: Simplify right side
    18,929.11x = 283,599,518.99
  5. Step 5: Solve for x
    x = 283,599,518.99/18,929.11
  6. Step 6: Final answer
    x = 14,982.19

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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.