Home / 21,022.76-29,001.30-13,074.32

Finding the Fourth Proportional to 21,022.76, 29,001.30 and 13,074.32

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Solution

The fourth proportional to 21,022.76, 29,001.30 and 13,074.32 is: 18,036.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.76 : 29,001.30 = 13,074.32 : x
  2. Step 2: Convert to fraction form
    21,022.76/29,001.30 = 13,074.32/x
  3. Step 3: Cross multiply
    21,022.76x = 29,001.30 × 13,074.32
  4. Step 4: Simplify right side
    21,022.76x = 379,172,276.62
  5. Step 5: Solve for x
    x = 379,172,276.62/21,022.76
  6. Step 6: Final answer
    x = 18,036.27

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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.