Home / 18,108.50-27,131.07-12,565.36

Finding the Fourth Proportional to 18,108.50, 27,131.07 and 12,565.36

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Solution

The fourth proportional to 18,108.50, 27,131.07 and 12,565.36 is: 18,826.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,108.50 : 27,131.07 = 12,565.36 : x
  2. Step 2: Convert to fraction form
    18,108.50/27,131.07 = 12,565.36/x
  3. Step 3: Cross multiply
    18,108.50x = 27,131.07 × 12,565.36
  4. Step 4: Simplify right side
    18,108.50x = 340,911,742.77
  5. Step 5: Solve for x
    x = 340,911,742.77/18,108.50
  6. Step 6: Final answer
    x = 18,826.07

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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.