Home / 13,721.64-18,934.89-8,056.62

Finding the Fourth Proportional to 13,721.64, 18,934.89 and 8,056.62

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Solution

The fourth proportional to 13,721.64, 18,934.89 and 8,056.62 is: 11,117.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.64 : 18,934.89 = 8,056.62 : x
  2. Step 2: Convert to fraction form
    13,721.64/18,934.89 = 8,056.62/x
  3. Step 3: Cross multiply
    13,721.64x = 18,934.89 × 8,056.62
  4. Step 4: Simplify right side
    13,721.64x = 152,551,213.47
  5. Step 5: Solve for x
    x = 152,551,213.47/13,721.64
  6. Step 6: Final answer
    x = 11,117.56

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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.