Home / 18,387.99-25,371.56-12,023.91

Finding the Fourth Proportional to 18,387.99, 25,371.56 and 12,023.91

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Solution

The fourth proportional to 18,387.99, 25,371.56 and 12,023.91 is: 16,590.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.99 : 25,371.56 = 12,023.91 : x
  2. Step 2: Convert to fraction form
    18,387.99/25,371.56 = 12,023.91/x
  3. Step 3: Cross multiply
    18,387.99x = 25,371.56 × 12,023.91
  4. Step 4: Simplify right side
    18,387.99x = 305,065,293.88
  5. Step 5: Solve for x
    x = 305,065,293.88/18,387.99
  6. Step 6: Final answer
    x = 16,590.46

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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.