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Finding the Fourth Proportional to 19,383.20, 29,007.60 and 11,597.60

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Solution

The fourth proportional to 19,383.20, 29,007.60 and 11,597.60 is: 17,356.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,383.20 : 29,007.60 = 11,597.60 : x
  2. Step 2: Convert to fraction form
    19,383.20/29,007.60 = 11,597.60/x
  3. Step 3: Cross multiply
    19,383.20x = 29,007.60 × 11,597.60
  4. Step 4: Simplify right side
    19,383.20x = 336,418,541.76
  5. Step 5: Solve for x
    x = 336,418,541.76/19,383.20
  6. Step 6: Final answer
    x = 17,356.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.