Home / 21,147.69-29,175.53-13,592.99

Finding the Fourth Proportional to 21,147.69, 29,175.53 and 13,592.99

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Solution

The fourth proportional to 21,147.69, 29,175.53 and 13,592.99 is: 18,752.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.69 : 29,175.53 = 13,592.99 : x
  2. Step 2: Convert to fraction form
    21,147.69/29,175.53 = 13,592.99/x
  3. Step 3: Cross multiply
    21,147.69x = 29,175.53 × 13,592.99
  4. Step 4: Simplify right side
    21,147.69x = 396,582,473.69
  5. Step 5: Solve for x
    x = 396,582,473.69/21,147.69
  6. Step 6: Final answer
    x = 18,752.99

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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.