Home / 11,925.56-16,458.28-6,621.40

Finding the Fourth Proportional to 11,925.56, 16,458.28 and 6,621.40

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Solution

The fourth proportional to 11,925.56, 16,458.28 and 6,621.40 is: 9,138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.56 : 16,458.28 = 6,621.40 : x
  2. Step 2: Convert to fraction form
    11,925.56/16,458.28 = 6,621.40/x
  3. Step 3: Cross multiply
    11,925.56x = 16,458.28 × 6,621.40
  4. Step 4: Simplify right side
    11,925.56x = 108,976,855.19
  5. Step 5: Solve for x
    x = 108,976,855.19/11,925.56
  6. Step 6: Final answer
    x = 9,138.09

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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.