Home / 11,156.64-15,395.02-6,680.28

Finding the Fourth Proportional to 11,156.64, 15,395.02 and 6,680.28

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Solution

The fourth proportional to 11,156.64, 15,395.02 and 6,680.28 is: 9,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.64 : 15,395.02 = 6,680.28 : x
  2. Step 2: Convert to fraction form
    11,156.64/15,395.02 = 6,680.28/x
  3. Step 3: Cross multiply
    11,156.64x = 15,395.02 × 6,680.28
  4. Step 4: Simplify right side
    11,156.64x = 102,843,044.21
  5. Step 5: Solve for x
    x = 102,843,044.21/11,156.64
  6. Step 6: Final answer
    x = 9,218.10

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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.