Home / 20,541.42-28,347.07-11,109.96

Finding the Fourth Proportional to 20,541.42, 28,347.07 and 11,109.96

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Solution

The fourth proportional to 20,541.42, 28,347.07 and 11,109.96 is: 15,331.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.42 : 28,347.07 = 11,109.96 : x
  2. Step 2: Convert to fraction form
    20,541.42/28,347.07 = 11,109.96/x
  3. Step 3: Cross multiply
    20,541.42x = 28,347.07 × 11,109.96
  4. Step 4: Simplify right side
    20,541.42x = 314,934,813.82
  5. Step 5: Solve for x
    x = 314,934,813.82/20,541.42
  6. Step 6: Final answer
    x = 15,331.70

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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.