Home / 14,721.53-20,315.57-8,007.21

Finding the Fourth Proportional to 14,721.53, 20,315.57 and 8,007.21

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Solution

The fourth proportional to 14,721.53, 20,315.57 and 8,007.21 is: 11,049.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,721.53 : 20,315.57 = 8,007.21 : x
  2. Step 2: Convert to fraction form
    14,721.53/20,315.57 = 8,007.21/x
  3. Step 3: Cross multiply
    14,721.53x = 20,315.57 × 8,007.21
  4. Step 4: Simplify right side
    14,721.53x = 162,670,995.22
  5. Step 5: Solve for x
    x = 162,670,995.22/14,721.53
  6. Step 6: Final answer
    x = 11,049.87

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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.