Home / 21,110.08-31,679.54-11,256.28

Finding the Fourth Proportional to 21,110.08, 31,679.54 and 11,256.28

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Solution

The fourth proportional to 21,110.08, 31,679.54 and 11,256.28 is: 16,892.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.08 : 31,679.54 = 11,256.28 : x
  2. Step 2: Convert to fraction form
    21,110.08/31,679.54 = 11,256.28/x
  3. Step 3: Cross multiply
    21,110.08x = 31,679.54 × 11,256.28
  4. Step 4: Simplify right side
    21,110.08x = 356,593,772.51
  5. Step 5: Solve for x
    x = 356,593,772.51/21,110.08
  6. Step 6: Final answer
    x = 16,892.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.