Home / 20,541.11-28,346.74-11,109.68

Finding the Fourth Proportional to 20,541.11, 28,346.74 and 11,109.68

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Solution

The fourth proportional to 20,541.11, 28,346.74 and 11,109.68 is: 15,331.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.11 : 28,346.74 = 11,109.68 : x
  2. Step 2: Convert to fraction form
    20,541.11/28,346.74 = 11,109.68/x
  3. Step 3: Cross multiply
    20,541.11x = 28,346.74 × 11,109.68
  4. Step 4: Simplify right side
    20,541.11x = 314,923,090.26
  5. Step 5: Solve for x
    x = 314,923,090.26/20,541.11
  6. Step 6: Final answer
    x = 15,331.35

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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.