Home / 32,928.56-45,456-21,007.52

Finding the Fourth Proportional to 32,928.56, 45,456 and 21,007.52

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Solution

The fourth proportional to 32,928.56, 45,456 and 21,007.52 is: 28,999.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,928.56 : 45,456 = 21,007.52 : x
  2. Step 2: Convert to fraction form
    32,928.56/45,456 = 21,007.52/x
  3. Step 3: Cross multiply
    32,928.56x = 45,456 × 21,007.52
  4. Step 4: Simplify right side
    32,928.56x = 954,917,829.12
  5. Step 5: Solve for x
    x = 954,917,829.12/32,928.56
  6. Step 6: Final answer
    x = 28,999.68

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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.