Home / 20,117.40-27,762.31-11,165.48

Finding the Fourth Proportional to 20,117.40, 27,762.31 and 11,165.48

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Solution

The fourth proportional to 20,117.40, 27,762.31 and 11,165.48 is: 15,408.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.40 : 27,762.31 = 11,165.48 : x
  2. Step 2: Convert to fraction form
    20,117.40/27,762.31 = 11,165.48/x
  3. Step 3: Cross multiply
    20,117.40x = 27,762.31 × 11,165.48
  4. Step 4: Simplify right side
    20,117.40x = 309,979,496.31
  5. Step 5: Solve for x
    x = 309,979,496.31/20,117.40
  6. Step 6: Final answer
    x = 15,408.53

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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.