Home / 20,029.78-27,643.50-11,646.28

Finding the Fourth Proportional to 20,029.78, 27,643.50 and 11,646.28

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Solution

The fourth proportional to 20,029.78, 27,643.50 and 11,646.28 is: 16,073.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,029.78 : 27,643.50 = 11,646.28 : x
  2. Step 2: Convert to fraction form
    20,029.78/27,643.50 = 11,646.28/x
  3. Step 3: Cross multiply
    20,029.78x = 27,643.50 × 11,646.28
  4. Step 4: Simplify right side
    20,029.78x = 321,943,941.18
  5. Step 5: Solve for x
    x = 321,943,941.18/20,029.78
  6. Step 6: Final answer
    x = 16,073.26

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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.