Home / 19,829.60-27,383.36-12,768.32

Finding the Fourth Proportional to 19,829.60, 27,383.36 and 12,768.32

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Solution

The fourth proportional to 19,829.60, 27,383.36 and 12,768.32 is: 17,632.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,829.60 : 27,383.36 = 12,768.32 : x
  2. Step 2: Convert to fraction form
    19,829.60/27,383.36 = 12,768.32/x
  3. Step 3: Cross multiply
    19,829.60x = 27,383.36 × 12,768.32
  4. Step 4: Simplify right side
    19,829.60x = 349,639,503.16
  5. Step 5: Solve for x
    x = 349,639,503.16/19,829.60
  6. Step 6: Final answer
    x = 17,632.20

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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.