Home / 20,543.01-28,349.22-11,111.37

Finding the Fourth Proportional to 20,543.01, 28,349.22 and 11,111.37

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Solution

The fourth proportional to 20,543.01, 28,349.22 and 11,111.37 is: 15,333.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.01 : 28,349.22 = 11,111.37 : x
  2. Step 2: Convert to fraction form
    20,543.01/28,349.22 = 11,111.37/x
  3. Step 3: Cross multiply
    20,543.01x = 28,349.22 × 11,111.37
  4. Step 4: Simplify right side
    20,543.01x = 314,998,672.63
  5. Step 5: Solve for x
    x = 314,998,672.63/20,543.01
  6. Step 6: Final answer
    x = 15,333.62

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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.