Home / 14,191.91-21,287.71-5,424.77

Finding the Fourth Proportional to 14,191.91, 21,287.71 and 5,424.77

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Solution

The fourth proportional to 14,191.91, 21,287.71 and 5,424.77 is: 8,137.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,191.91 : 21,287.71 = 5,424.77 : x
  2. Step 2: Convert to fraction form
    14,191.91/21,287.71 = 5,424.77/x
  3. Step 3: Cross multiply
    14,191.91x = 21,287.71 × 5,424.77
  4. Step 4: Simplify right side
    14,191.91x = 115,480,990.58
  5. Step 5: Solve for x
    x = 115,480,990.58/14,191.91
  6. Step 6: Final answer
    x = 8,137.10

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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.