Home / 37,123.49-51,221.55-20,991.13

Finding the Fourth Proportional to 37,123.49, 51,221.55 and 20,991.13

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Solution

The fourth proportional to 37,123.49, 51,221.55 and 20,991.13 is: 28,962.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,123.49 : 51,221.55 = 20,991.13 : x
  2. Step 2: Convert to fraction form
    37,123.49/51,221.55 = 20,991.13/x
  3. Step 3: Cross multiply
    37,123.49x = 51,221.55 × 20,991.13
  4. Step 4: Simplify right side
    37,123.49x = 1,075,198,214.85
  5. Step 5: Solve for x
    x = 1,075,198,214.85/37,123.49
  6. Step 6: Final answer
    x = 28,962.75

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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.