Home / 13,551.92-20,322.12-8,356.40

Finding the Fourth Proportional to 13,551.92, 20,322.12 and 8,356.40

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Solution

The fourth proportional to 13,551.92, 20,322.12 and 8,356.40 is: 12,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.92 : 20,322.12 = 8,356.40 : x
  2. Step 2: Convert to fraction form
    13,551.92/20,322.12 = 8,356.40/x
  3. Step 3: Cross multiply
    13,551.92x = 20,322.12 × 8,356.40
  4. Step 4: Simplify right side
    13,551.92x = 169,819,763.57
  5. Step 5: Solve for x
    x = 169,819,763.57/13,551.92
  6. Step 6: Final answer
    x = 12,531.05

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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.