Home / 18,942.32-28,428.06-8,561.36

Finding the Fourth Proportional to 18,942.32, 28,428.06 and 8,561.36

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Solution

The fourth proportional to 18,942.32, 28,428.06 and 8,561.36 is: 12,848.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.32 : 28,428.06 = 8,561.36 : x
  2. Step 2: Convert to fraction form
    18,942.32/28,428.06 = 8,561.36/x
  3. Step 3: Cross multiply
    18,942.32x = 28,428.06 × 8,561.36
  4. Step 4: Simplify right side
    18,942.32x = 243,382,855.76
  5. Step 5: Solve for x
    x = 243,382,855.76/18,942.32
  6. Step 6: Final answer
    x = 12,848.63

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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.