Home / 20,723.54-28,597.70-11,291.90

Finding the Fourth Proportional to 20,723.54, 28,597.70 and 11,291.90

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Solution

The fourth proportional to 20,723.54, 28,597.70 and 11,291.90 is: 15,582.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.54 : 28,597.70 = 11,291.90 : x
  2. Step 2: Convert to fraction form
    20,723.54/28,597.70 = 11,291.90/x
  3. Step 3: Cross multiply
    20,723.54x = 28,597.70 × 11,291.90
  4. Step 4: Simplify right side
    20,723.54x = 322,922,368.63
  5. Step 5: Solve for x
    x = 322,922,368.63/20,723.54
  6. Step 6: Final answer
    x = 15,582.39

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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.