Home / 37,128.79-51,240.44-21,212.90

Finding the Fourth Proportional to 37,128.79, 51,240.44 and 21,212.90

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Solution

The fourth proportional to 37,128.79, 51,240.44 and 21,212.90 is: 29,275.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,128.79 : 51,240.44 = 21,212.90 : x
  2. Step 2: Convert to fraction form
    37,128.79/51,240.44 = 21,212.90/x
  3. Step 3: Cross multiply
    37,128.79x = 51,240.44 × 21,212.90
  4. Step 4: Simplify right side
    37,128.79x = 1,086,958,126.51
  5. Step 5: Solve for x
    x = 1,086,958,126.51/37,128.79
  6. Step 6: Final answer
    x = 29,275.35

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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.