Home / 37,384.40-51,589.80-20,388.78

Finding the Fourth Proportional to 37,384.40, 51,589.80 and 20,388.78

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Solution

The fourth proportional to 37,384.40, 51,589.80 and 20,388.78 is: 28,136.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,384.40 : 51,589.80 = 20,388.78 : x
  2. Step 2: Convert to fraction form
    37,384.40/51,589.80 = 20,388.78/x
  3. Step 3: Cross multiply
    37,384.40x = 51,589.80 × 20,388.78
  4. Step 4: Simplify right side
    37,384.40x = 1,051,853,082.44
  5. Step 5: Solve for x
    x = 1,051,853,082.44/37,384.40
  6. Step 6: Final answer
    x = 28,136.15

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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.