Home / 21,319.38-29,416.25-15,364.26

Finding the Fourth Proportional to 21,319.38, 29,416.25 and 15,364.26

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Solution

The fourth proportional to 21,319.38, 29,416.25 and 15,364.26 is: 21,199.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.38 : 29,416.25 = 15,364.26 : x
  2. Step 2: Convert to fraction form
    21,319.38/29,416.25 = 15,364.26/x
  3. Step 3: Cross multiply
    21,319.38x = 29,416.25 × 15,364.26
  4. Step 4: Simplify right side
    21,319.38x = 451,958,836.40
  5. Step 5: Solve for x
    x = 451,958,836.40/21,319.38
  6. Step 6: Final answer
    x = 21,199.44

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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.