Home / 26,983.35-37,220.99-21,005.55

Finding the Fourth Proportional to 26,983.35, 37,220.99 and 21,005.55

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Solution

The fourth proportional to 26,983.35, 37,220.99 and 21,005.55 is: 28,975.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,983.35 : 37,220.99 = 21,005.55 : x
  2. Step 2: Convert to fraction form
    26,983.35/37,220.99 = 21,005.55/x
  3. Step 3: Cross multiply
    26,983.35x = 37,220.99 × 21,005.55
  4. Step 4: Simplify right side
    26,983.35x = 781,847,261.47
  5. Step 5: Solve for x
    x = 781,847,261.47/26,983.35
  6. Step 6: Final answer
    x = 28,975.17

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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.