Home / 18,411.12-25,406.22-10,857.77

Finding the Fourth Proportional to 18,411.12, 25,406.22 and 10,857.77

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Solution

The fourth proportional to 18,411.12, 25,406.22 and 10,857.77 is: 14,983.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.12 : 25,406.22 = 10,857.77 : x
  2. Step 2: Convert to fraction form
    18,411.12/25,406.22 = 10,857.77/x
  3. Step 3: Cross multiply
    18,411.12x = 25,406.22 × 10,857.77
  4. Step 4: Simplify right side
    18,411.12x = 275,854,927.94
  5. Step 5: Solve for x
    x = 275,854,927.94/18,411.12
  6. Step 6: Final answer
    x = 14,983.06

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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.