Home / 14,144.96-19,519.86-7,857.20

Finding the Fourth Proportional to 14,144.96, 19,519.86 and 7,857.20

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Solution

The fourth proportional to 14,144.96, 19,519.86 and 7,857.20 is: 10,842.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,144.96 : 19,519.86 = 7,857.20 : x
  2. Step 2: Convert to fraction form
    14,144.96/19,519.86 = 7,857.20/x
  3. Step 3: Cross multiply
    14,144.96x = 19,519.86 × 7,857.20
  4. Step 4: Simplify right side
    14,144.96x = 153,371,443.99
  5. Step 5: Solve for x
    x = 153,371,443.99/14,144.96
  6. Step 6: Final answer
    x = 10,842.83

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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.