Home / 20,429.48-28,195.43-11,477.49

Finding the Fourth Proportional to 20,429.48, 28,195.43 and 11,477.49

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Solution

The fourth proportional to 20,429.48, 28,195.43 and 11,477.49 is: 15,840.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.48 : 28,195.43 = 11,477.49 : x
  2. Step 2: Convert to fraction form
    20,429.48/28,195.43 = 11,477.49/x
  3. Step 3: Cross multiply
    20,429.48x = 28,195.43 × 11,477.49
  4. Step 4: Simplify right side
    20,429.48x = 323,612,708.48
  5. Step 5: Solve for x
    x = 323,612,708.48/20,429.48
  6. Step 6: Final answer
    x = 15,840.48

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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.