Home / 11,391.02-15,721.34-6,913.91

Finding the Fourth Proportional to 11,391.02, 15,721.34 and 6,913.91

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Solution

The fourth proportional to 11,391.02, 15,721.34 and 6,913.91 is: 9,542.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.02 : 15,721.34 = 6,913.91 : x
  2. Step 2: Convert to fraction form
    11,391.02/15,721.34 = 6,913.91/x
  3. Step 3: Cross multiply
    11,391.02x = 15,721.34 × 6,913.91
  4. Step 4: Simplify right side
    11,391.02x = 108,695,929.84
  5. Step 5: Solve for x
    x = 108,695,929.84/11,391.02
  6. Step 6: Final answer
    x = 9,542.25

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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.