Home / 13,660.38-18,851.13-8,953.47

Finding the Fourth Proportional to 13,660.38, 18,851.13 and 8,953.47

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Solution

The fourth proportional to 13,660.38, 18,851.13 and 8,953.47 is: 12,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.38 : 18,851.13 = 8,953.47 : x
  2. Step 2: Convert to fraction form
    13,660.38/18,851.13 = 8,953.47/x
  3. Step 3: Cross multiply
    13,660.38x = 18,851.13 × 8,953.47
  4. Step 4: Simplify right side
    13,660.38x = 168,783,026.92
  5. Step 5: Solve for x
    x = 168,783,026.92/13,660.38
  6. Step 6: Final answer
    x = 12,355.66

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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.