Home / 11,695.44-16,139.12-6,389.28

Finding the Fourth Proportional to 11,695.44, 16,139.12 and 6,389.28

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Solution

The fourth proportional to 11,695.44, 16,139.12 and 6,389.28 is: 8,816.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.44 : 16,139.12 = 6,389.28 : x
  2. Step 2: Convert to fraction form
    11,695.44/16,139.12 = 6,389.28/x
  3. Step 3: Cross multiply
    11,695.44x = 16,139.12 × 6,389.28
  4. Step 4: Simplify right side
    11,695.44x = 103,117,356.63
  5. Step 5: Solve for x
    x = 103,117,356.63/11,695.44
  6. Step 6: Final answer
    x = 8,816.89

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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.