Home / 37,128.78-51,237.90-20,133.09

Finding the Fourth Proportional to 37,128.78, 51,237.90 and 20,133.09

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Solution

The fourth proportional to 37,128.78, 51,237.90 and 20,133.09 is: 27,783.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,128.78 : 51,237.90 = 20,133.09 : x
  2. Step 2: Convert to fraction form
    37,128.78/51,237.90 = 20,133.09/x
  3. Step 3: Cross multiply
    37,128.78x = 51,237.90 × 20,133.09
  4. Step 4: Simplify right side
    37,128.78x = 1,031,577,252.11
  5. Step 5: Solve for x
    x = 1,031,577,252.11/37,128.78
  6. Step 6: Final answer
    x = 27,783.76

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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.