Home / 20,541.39-28,347.10-11,109.93

Finding the Fourth Proportional to 20,541.39, 28,347.10 and 11,109.93

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Solution

The fourth proportional to 20,541.39, 28,347.10 and 11,109.93 is: 15,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.39 : 28,347.10 = 11,109.93 : x
  2. Step 2: Convert to fraction form
    20,541.39/28,347.10 = 11,109.93/x
  3. Step 3: Cross multiply
    20,541.39x = 28,347.10 × 11,109.93
  4. Step 4: Simplify right side
    20,541.39x = 314,934,241.15
  5. Step 5: Solve for x
    x = 314,934,241.15/20,541.39
  6. Step 6: Final answer
    x = 15,331.69

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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.