Home / 18,955.23-28,438.32-5,809.54

Finding the Fourth Proportional to 18,955.23, 28,438.32 and 5,809.54

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Solution

The fourth proportional to 18,955.23, 28,438.32 and 5,809.54 is: 8,715.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,955.23 : 28,438.32 = 5,809.54 : x
  2. Step 2: Convert to fraction form
    18,955.23/28,438.32 = 5,809.54/x
  3. Step 3: Cross multiply
    18,955.23x = 28,438.32 × 5,809.54
  4. Step 4: Simplify right side
    18,955.23x = 165,213,557.57
  5. Step 5: Solve for x
    x = 165,213,557.57/18,955.23
  6. Step 6: Final answer
    x = 8,715.99

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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.