Home / 13,356.18-18,435.36-8,822.18

Finding the Fourth Proportional to 13,356.18, 18,435.36 and 8,822.18

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Solution

The fourth proportional to 13,356.18, 18,435.36 and 8,822.18 is: 12,177.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.18 : 18,435.36 = 8,822.18 : x
  2. Step 2: Convert to fraction form
    13,356.18/18,435.36 = 8,822.18/x
  3. Step 3: Cross multiply
    13,356.18x = 18,435.36 × 8,822.18
  4. Step 4: Simplify right side
    13,356.18x = 162,640,064.28
  5. Step 5: Solve for x
    x = 162,640,064.28/13,356.18
  6. Step 6: Final answer
    x = 12,177.14

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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.