Home / 10,218.91-14,102.45-5,742.56

Finding the Fourth Proportional to 10,218.91, 14,102.45 and 5,742.56

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Solution

The fourth proportional to 10,218.91, 14,102.45 and 5,742.56 is: 7,924.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.91 : 14,102.45 = 5,742.56 : x
  2. Step 2: Convert to fraction form
    10,218.91/14,102.45 = 5,742.56/x
  3. Step 3: Cross multiply
    10,218.91x = 14,102.45 × 5,742.56
  4. Step 4: Simplify right side
    10,218.91x = 80,984,136.56
  5. Step 5: Solve for x
    x = 80,984,136.56/10,218.91
  6. Step 6: Final answer
    x = 7,924.93

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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.