Home / 20,722.95-28,597.67-11,291.51

Finding the Fourth Proportional to 20,722.95, 28,597.67 and 11,291.51

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Solution

The fourth proportional to 20,722.95, 28,597.67 and 11,291.51 is: 15,582.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.95 : 28,597.67 = 11,291.51 : x
  2. Step 2: Convert to fraction form
    20,722.95/28,597.67 = 11,291.51/x
  3. Step 3: Cross multiply
    20,722.95x = 28,597.67 × 11,291.51
  4. Step 4: Simplify right side
    20,722.95x = 322,910,677.34
  5. Step 5: Solve for x
    x = 322,910,677.34/20,722.95
  6. Step 6: Final answer
    x = 15,582.27

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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.