Home / 21,700.78-32,498.62-15,018.56

Finding the Fourth Proportional to 21,700.78, 32,498.62 and 15,018.56

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Solution

The fourth proportional to 21,700.78, 32,498.62 and 15,018.56 is: 22,491.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.78 : 32,498.62 = 15,018.56 : x
  2. Step 2: Convert to fraction form
    21,700.78/32,498.62 = 15,018.56/x
  3. Step 3: Cross multiply
    21,700.78x = 32,498.62 × 15,018.56
  4. Step 4: Simplify right side
    21,700.78x = 488,082,579.02
  5. Step 5: Solve for x
    x = 488,082,579.02/21,700.78
  6. Step 6: Final answer
    x = 22,491.48

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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.