Home / 21,656.82-29,893.68-15,358.26

Finding the Fourth Proportional to 21,656.82, 29,893.68 and 15,358.26

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Solution

The fourth proportional to 21,656.82, 29,893.68 and 15,358.26 is: 21,199.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.82 : 29,893.68 = 15,358.26 : x
  2. Step 2: Convert to fraction form
    21,656.82/29,893.68 = 15,358.26/x
  3. Step 3: Cross multiply
    21,656.82x = 29,893.68 × 15,358.26
  4. Step 4: Simplify right side
    21,656.82x = 459,114,909.80
  5. Step 5: Solve for x
    x = 459,114,909.80/21,656.82
  6. Step 6: Final answer
    x = 21,199.55

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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.