Home / 12,320.48-18,451.38-6,381.50

Finding the Fourth Proportional to 12,320.48, 18,451.38 and 6,381.50

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Solution

The fourth proportional to 12,320.48, 18,451.38 and 6,381.50 is: 9,557.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.48 : 18,451.38 = 6,381.50 : x
  2. Step 2: Convert to fraction form
    12,320.48/18,451.38 = 6,381.50/x
  3. Step 3: Cross multiply
    12,320.48x = 18,451.38 × 6,381.50
  4. Step 4: Simplify right side
    12,320.48x = 117,747,481.47
  5. Step 5: Solve for x
    x = 117,747,481.47/12,320.48
  6. Step 6: Final answer
    x = 9,557.05

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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.