Home / 21,942.12-30,276.24-12,510.60

Finding the Fourth Proportional to 21,942.12, 30,276.24 and 12,510.60

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Solution

The fourth proportional to 21,942.12, 30,276.24 and 12,510.60 is: 17,262.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,942.12 : 30,276.24 = 12,510.60 : x
  2. Step 2: Convert to fraction form
    21,942.12/30,276.24 = 12,510.60/x
  3. Step 3: Cross multiply
    21,942.12x = 30,276.24 × 12,510.60
  4. Step 4: Simplify right side
    21,942.12x = 378,773,928.14
  5. Step 5: Solve for x
    x = 378,773,928.14/21,942.12
  6. Step 6: Final answer
    x = 17,262.41

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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.