Home / 20,424.96-28,185.14-11,472.22

Finding the Fourth Proportional to 20,424.96, 28,185.14 and 11,472.22

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Solution

The fourth proportional to 20,424.96, 28,185.14 and 11,472.22 is: 15,830.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.96 : 28,185.14 = 11,472.22 : x
  2. Step 2: Convert to fraction form
    20,424.96/28,185.14 = 11,472.22/x
  3. Step 3: Cross multiply
    20,424.96x = 28,185.14 × 11,472.22
  4. Step 4: Simplify right side
    20,424.96x = 323,346,126.81
  5. Step 5: Solve for x
    x = 323,346,126.81/20,424.96
  6. Step 6: Final answer
    x = 15,830.93

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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.