Home / 11,756.43-16,223.31-6,721.47

Finding the Fourth Proportional to 11,756.43, 16,223.31 and 6,721.47

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Solution

The fourth proportional to 11,756.43, 16,223.31 and 6,721.47 is: 9,275.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,756.43 : 16,223.31 = 6,721.47 : x
  2. Step 2: Convert to fraction form
    11,756.43/16,223.31 = 6,721.47/x
  3. Step 3: Cross multiply
    11,756.43x = 16,223.31 × 6,721.47
  4. Step 4: Simplify right side
    11,756.43x = 109,044,491.47
  5. Step 5: Solve for x
    x = 109,044,491.47/11,756.43
  6. Step 6: Final answer
    x = 9,275.31

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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.