Home / 13,514.91-18,642.81-8,133.63

Finding the Fourth Proportional to 13,514.91, 18,642.81 and 8,133.63

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Solution

The fourth proportional to 13,514.91, 18,642.81 and 8,133.63 is: 11,219.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,514.91 : 18,642.81 = 8,133.63 : x
  2. Step 2: Convert to fraction form
    13,514.91/18,642.81 = 8,133.63/x
  3. Step 3: Cross multiply
    13,514.91x = 18,642.81 × 8,133.63
  4. Step 4: Simplify right side
    13,514.91x = 151,633,718.70
  5. Step 5: Solve for x
    x = 151,633,718.70/13,514.91
  6. Step 6: Final answer
    x = 11,219.74

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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.