Home / 15,690.03-21,652.40-8,616.61

Finding the Fourth Proportional to 15,690.03, 21,652.40 and 8,616.61

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Solution

The fourth proportional to 15,690.03, 21,652.40 and 8,616.61 is: 11,891.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.03 : 21,652.40 = 8,616.61 : x
  2. Step 2: Convert to fraction form
    15,690.03/21,652.40 = 8,616.61/x
  3. Step 3: Cross multiply
    15,690.03x = 21,652.40 × 8,616.61
  4. Step 4: Simplify right side
    15,690.03x = 186,570,135.02
  5. Step 5: Solve for x
    x = 186,570,135.02/15,690.03
  6. Step 6: Final answer
    x = 11,891.00

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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.