Home / 11,925.28-16,456.12-6,620.10

Finding the Fourth Proportional to 11,925.28, 16,456.12 and 6,620.10

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Solution

The fourth proportional to 11,925.28, 16,456.12 and 6,620.10 is: 9,135.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.28 : 16,456.12 = 6,620.10 : x
  2. Step 2: Convert to fraction form
    11,925.28/16,456.12 = 6,620.10/x
  3. Step 3: Cross multiply
    11,925.28x = 16,456.12 × 6,620.10
  4. Step 4: Simplify right side
    11,925.28x = 108,941,160.01
  5. Step 5: Solve for x
    x = 108,941,160.01/11,925.28
  6. Step 6: Final answer
    x = 9,135.31

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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.