Home / 12,320.10-18,483.19-3,555.70

Finding the Fourth Proportional to 12,320.10, 18,483.19 and 3,555.70

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Solution

The fourth proportional to 12,320.10, 18,483.19 and 3,555.70 is: 5,334.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.10 : 18,483.19 = 3,555.70 : x
  2. Step 2: Convert to fraction form
    12,320.10/18,483.19 = 3,555.70/x
  3. Step 3: Cross multiply
    12,320.10x = 18,483.19 × 3,555.70
  4. Step 4: Simplify right side
    12,320.10x = 65,720,623.59
  5. Step 5: Solve for x
    x = 65,720,623.59/12,320.10
  6. Step 6: Final answer
    x = 5,334.42

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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.