Home / 20,429.06-28,194.95-11,477.25

Finding the Fourth Proportional to 20,429.06, 28,194.95 and 11,477.25

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Solution

The fourth proportional to 20,429.06, 28,194.95 and 11,477.25 is: 15,840.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.06 : 28,194.95 = 11,477.25 : x
  2. Step 2: Convert to fraction form
    20,429.06/28,194.95 = 11,477.25/x
  3. Step 3: Cross multiply
    20,429.06x = 28,194.95 × 11,477.25
  4. Step 4: Simplify right side
    20,429.06x = 323,600,489.89
  5. Step 5: Solve for x
    x = 323,600,489.89/20,429.06
  6. Step 6: Final answer
    x = 15,840.20

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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.