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Finding the Fourth Proportional to 28,355.54, 42,533.30 and 7,579.04

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Solution

The fourth proportional to 28,355.54, 42,533.30 and 7,579.04 is: 11,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.54 : 42,533.30 = 7,579.04 : x
  2. Step 2: Convert to fraction form
    28,355.54/42,533.30 = 7,579.04/x
  3. Step 3: Cross multiply
    28,355.54x = 42,533.30 × 7,579.04
  4. Step 4: Simplify right side
    28,355.54x = 322,361,331.47
  5. Step 5: Solve for x
    x = 322,361,331.47/28,355.54
  6. Step 6: Final answer
    x = 11,368.55

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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.