Home / 14,122.55-21,181.78-5,357.47

Finding the Fourth Proportional to 14,122.55, 21,181.78 and 5,357.47

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Solution

The fourth proportional to 14,122.55, 21,181.78 and 5,357.47 is: 8,035.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,122.55 : 21,181.78 = 5,357.47 : x
  2. Step 2: Convert to fraction form
    14,122.55/21,181.78 = 5,357.47/x
  3. Step 3: Cross multiply
    14,122.55x = 21,181.78 × 5,357.47
  4. Step 4: Simplify right side
    14,122.55x = 113,480,669.71
  5. Step 5: Solve for x
    x = 113,480,669.71/14,122.55
  6. Step 6: Final answer
    x = 8,035.42

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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.