Home / 13,701.69-18,908.51-8,660.66

Finding the Fourth Proportional to 13,701.69, 18,908.51 and 8,660.66

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Solution

The fourth proportional to 13,701.69, 18,908.51 and 8,660.66 is: 11,951.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.69 : 18,908.51 = 8,660.66 : x
  2. Step 2: Convert to fraction form
    13,701.69/18,908.51 = 8,660.66/x
  3. Step 3: Cross multiply
    13,701.69x = 18,908.51 × 8,660.66
  4. Step 4: Simplify right side
    13,701.69x = 163,760,038.37
  5. Step 5: Solve for x
    x = 163,760,038.37/13,701.69
  6. Step 6: Final answer
    x = 11,951.81

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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.