Home / 15,690.05-21,652.40-8,616.52

Finding the Fourth Proportional to 15,690.05, 21,652.40 and 8,616.52

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Solution

The fourth proportional to 15,690.05, 21,652.40 and 8,616.52 is: 11,890.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.05 : 21,652.40 = 8,616.52 : x
  2. Step 2: Convert to fraction form
    15,690.05/21,652.40 = 8,616.52/x
  3. Step 3: Cross multiply
    15,690.05x = 21,652.40 × 8,616.52
  4. Step 4: Simplify right side
    15,690.05x = 186,568,305.06
  5. Step 5: Solve for x
    x = 186,568,305.06/15,690.05
  6. Step 6: Final answer
    x = 11,890.87

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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.