Home / 15,935.64-21,991.32-8,862.72

Finding the Fourth Proportional to 15,935.64, 21,991.32 and 8,862.72

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Solution

The fourth proportional to 15,935.64, 21,991.32 and 8,862.72 is: 12,230.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,935.64 : 21,991.32 = 8,862.72 : x
  2. Step 2: Convert to fraction form
    15,935.64/21,991.32 = 8,862.72/x
  3. Step 3: Cross multiply
    15,935.64x = 21,991.32 × 8,862.72
  4. Step 4: Simplify right side
    15,935.64x = 194,902,911.59
  5. Step 5: Solve for x
    x = 194,902,911.59/15,935.64
  6. Step 6: Final answer
    x = 12,230.63

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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.