Home / 15,942.80-23,903.40-8,145.20

Finding the Fourth Proportional to 15,942.80, 23,903.40 and 8,145.20

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Solution

The fourth proportional to 15,942.80, 23,903.40 and 8,145.20 is: 12,212.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,942.80 : 23,903.40 = 8,145.20 : x
  2. Step 2: Convert to fraction form
    15,942.80/23,903.40 = 8,145.20/x
  3. Step 3: Cross multiply
    15,942.80x = 23,903.40 × 8,145.20
  4. Step 4: Simplify right side
    15,942.80x = 194,697,973.68
  5. Step 5: Solve for x
    x = 194,697,973.68/15,942.80
  6. Step 6: Final answer
    x = 12,212.28

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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.