Home / 13,622.08-18,800.80-7,957.49

Finding the Fourth Proportional to 13,622.08, 18,800.80 and 7,957.49

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Solution

The fourth proportional to 13,622.08, 18,800.80 and 7,957.49 is: 10,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.08 : 18,800.80 = 7,957.49 : x
  2. Step 2: Convert to fraction form
    13,622.08/18,800.80 = 7,957.49/x
  3. Step 3: Cross multiply
    13,622.08x = 18,800.80 × 7,957.49
  4. Step 4: Simplify right side
    13,622.08x = 149,607,205.10
  5. Step 5: Solve for x
    x = 149,607,205.10/13,622.08
  6. Step 6: Final answer
    x = 10,982.70

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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.