Home / 28,663.12-39,558.48-17,331.28

Finding the Fourth Proportional to 28,663.12, 39,558.48 and 17,331.28

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Solution

The fourth proportional to 28,663.12, 39,558.48 and 17,331.28 is: 23,919.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.12 : 39,558.48 = 17,331.28 : x
  2. Step 2: Convert to fraction form
    28,663.12/39,558.48 = 17,331.28/x
  3. Step 3: Cross multiply
    28,663.12x = 39,558.48 × 17,331.28
  4. Step 4: Simplify right side
    28,663.12x = 685,599,093.25
  5. Step 5: Solve for x
    x = 685,599,093.25/28,663.12
  6. Step 6: Final answer
    x = 23,919.21

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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.