Home / 20,575.77-28,394.22-11,501.34

Finding the Fourth Proportional to 20,575.77, 28,394.22 and 11,501.34

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Solution

The fourth proportional to 20,575.77, 28,394.22 and 11,501.34 is: 15,871.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.77 : 28,394.22 = 11,501.34 : x
  2. Step 2: Convert to fraction form
    20,575.77/28,394.22 = 11,501.34/x
  3. Step 3: Cross multiply
    20,575.77x = 28,394.22 × 11,501.34
  4. Step 4: Simplify right side
    20,575.77x = 326,571,578.25
  5. Step 5: Solve for x
    x = 326,571,578.25/20,575.77
  6. Step 6: Final answer
    x = 15,871.66

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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.