Home / 19,651.20-27,090-14,927.28

Finding the Fourth Proportional to 19,651.20, 27,090 and 14,927.28

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Solution

The fourth proportional to 19,651.20, 27,090 and 14,927.28 is: 20,577.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,651.20 : 27,090 = 14,927.28 : x
  2. Step 2: Convert to fraction form
    19,651.20/27,090 = 14,927.28/x
  3. Step 3: Cross multiply
    19,651.20x = 27,090 × 14,927.28
  4. Step 4: Simplify right side
    19,651.20x = 404,380,015.20
  5. Step 5: Solve for x
    x = 404,380,015.20/19,651.20
  6. Step 6: Final answer
    x = 20,577.88

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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.