Home / 13,622.10-20,411.55-8,999.70

Finding the Fourth Proportional to 13,622.10, 20,411.55 and 8,999.70

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Solution

The fourth proportional to 13,622.10, 20,411.55 and 8,999.70 is: 13,485.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.10 : 20,411.55 = 8,999.70 : x
  2. Step 2: Convert to fraction form
    13,622.10/20,411.55 = 8,999.70/x
  3. Step 3: Cross multiply
    13,622.10x = 20,411.55 × 8,999.70
  4. Step 4: Simplify right side
    13,622.10x = 183,697,826.54
  5. Step 5: Solve for x
    x = 183,697,826.54/13,622.10
  6. Step 6: Final answer
    x = 13,485.28

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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.