Home / 28,190.23-42,293.64-8,471.79

Finding the Fourth Proportional to 28,190.23, 42,293.64 and 8,471.79

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Solution

The fourth proportional to 28,190.23, 42,293.64 and 8,471.79 is: 12,710.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190.23 : 42,293.64 = 8,471.79 : x
  2. Step 2: Convert to fraction form
    28,190.23/42,293.64 = 8,471.79/x
  3. Step 3: Cross multiply
    28,190.23x = 42,293.64 × 8,471.79
  4. Step 4: Simplify right side
    28,190.23x = 358,302,868.18
  5. Step 5: Solve for x
    x = 358,302,868.18/28,190.23
  6. Step 6: Final answer
    x = 12,710.18

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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.