Home / 13,363.06-18,429.32-8,642.74

Finding the Fourth Proportional to 13,363.06, 18,429.32 and 8,642.74

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Solution

The fourth proportional to 13,363.06, 18,429.32 and 8,642.74 is: 11,919.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.06 : 18,429.32 = 8,642.74 : x
  2. Step 2: Convert to fraction form
    13,363.06/18,429.32 = 8,642.74/x
  3. Step 3: Cross multiply
    13,363.06x = 18,429.32 × 8,642.74
  4. Step 4: Simplify right side
    13,363.06x = 159,279,821.14
  5. Step 5: Solve for x
    x = 159,279,821.14/13,363.06
  6. Step 6: Final answer
    x = 11,919.41

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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.