Home / 13,641.45-18,823.67-7,672.99

Finding the Fourth Proportional to 13,641.45, 18,823.67 and 7,672.99

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Solution

The fourth proportional to 13,641.45, 18,823.67 and 7,672.99 is: 10,587.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.45 : 18,823.67 = 7,672.99 : x
  2. Step 2: Convert to fraction form
    13,641.45/18,823.67 = 7,672.99/x
  3. Step 3: Cross multiply
    13,641.45x = 18,823.67 × 7,672.99
  4. Step 4: Simplify right side
    13,641.45x = 144,433,800.54
  5. Step 5: Solve for x
    x = 144,433,800.54/13,641.45
  6. Step 6: Final answer
    x = 10,587.87

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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.