Home / 14,109.82-21,178.50-6,719.38

Finding the Fourth Proportional to 14,109.82, 21,178.50 and 6,719.38

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Solution

The fourth proportional to 14,109.82, 21,178.50 and 6,719.38 is: 10,085.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.82 : 21,178.50 = 6,719.38 : x
  2. Step 2: Convert to fraction form
    14,109.82/21,178.50 = 6,719.38/x
  3. Step 3: Cross multiply
    14,109.82x = 21,178.50 × 6,719.38
  4. Step 4: Simplify right side
    14,109.82x = 142,306,389.33
  5. Step 5: Solve for x
    x = 142,306,389.33/14,109.82
  6. Step 6: Final answer
    x = 10,085.63

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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.