Home / 18,289.17-27,420.45-12,351.36

Finding the Fourth Proportional to 18,289.17, 27,420.45 and 12,351.36

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Solution

The fourth proportional to 18,289.17, 27,420.45 and 12,351.36 is: 18,518.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.17 : 27,420.45 = 12,351.36 : x
  2. Step 2: Convert to fraction form
    18,289.17/27,420.45 = 12,351.36/x
  3. Step 3: Cross multiply
    18,289.17x = 27,420.45 × 12,351.36
  4. Step 4: Simplify right side
    18,289.17x = 338,679,849.31
  5. Step 5: Solve for x
    x = 338,679,849.31/18,289.17
  6. Step 6: Final answer
    x = 18,518.05

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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.