Home / 12,912.52-17,821.80-7,535.60

Finding the Fourth Proportional to 12,912.52, 17,821.80 and 7,535.60

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Solution

The fourth proportional to 12,912.52, 17,821.80 and 7,535.60 is: 10,400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.52 : 17,821.80 = 7,535.60 : x
  2. Step 2: Convert to fraction form
    12,912.52/17,821.80 = 7,535.60/x
  3. Step 3: Cross multiply
    12,912.52x = 17,821.80 × 7,535.60
  4. Step 4: Simplify right side
    12,912.52x = 134,297,956.08
  5. Step 5: Solve for x
    x = 134,297,956.08/12,912.52
  6. Step 6: Final answer
    x = 10,400.60

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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.