Home / 15,148.92-20,895.66-8,859

Finding the Fourth Proportional to 15,148.92, 20,895.66 and 8,859

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Solution

The fourth proportional to 15,148.92, 20,895.66 and 8,859 is: 12,219.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,148.92 : 20,895.66 = 8,859 : x
  2. Step 2: Convert to fraction form
    15,148.92/20,895.66 = 8,859/x
  3. Step 3: Cross multiply
    15,148.92x = 20,895.66 × 8,859
  4. Step 4: Simplify right side
    15,148.92x = 185,114,651.94
  5. Step 5: Solve for x
    x = 185,114,651.94/15,148.92
  6. Step 6: Final answer
    x = 12,219.66

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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.