Home / 15,690.94-21,653.64-8,617.52

Finding the Fourth Proportional to 15,690.94, 21,653.64 and 8,617.52

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Solution

The fourth proportional to 15,690.94, 21,653.64 and 8,617.52 is: 11,892.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.94 : 21,653.64 = 8,617.52 : x
  2. Step 2: Convert to fraction form
    15,690.94/21,653.64 = 8,617.52/x
  3. Step 3: Cross multiply
    15,690.94x = 21,653.64 × 8,617.52
  4. Step 4: Simplify right side
    15,690.94x = 186,600,729.91
  5. Step 5: Solve for x
    x = 186,600,729.91/15,690.94
  6. Step 6: Final answer
    x = 11,892.26

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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.