Home / 15,415.78-23,123.72-3,728.98

Finding the Fourth Proportional to 15,415.78, 23,123.72 and 3,728.98

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Solution

The fourth proportional to 15,415.78, 23,123.72 and 3,728.98 is: 5,593.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.78 : 23,123.72 = 3,728.98 : x
  2. Step 2: Convert to fraction form
    15,415.78/23,123.72 = 3,728.98/x
  3. Step 3: Cross multiply
    15,415.78x = 23,123.72 × 3,728.98
  4. Step 4: Simplify right side
    15,415.78x = 86,227,889.41
  5. Step 5: Solve for x
    x = 86,227,889.41/15,415.78
  6. Step 6: Final answer
    x = 5,593.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.