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Finding the Fourth Proportional to 28,533.54, 42,802.50 and 7,756.50

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Solution

The fourth proportional to 28,533.54, 42,802.50 and 7,756.50 is: 11,635.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,533.54 : 42,802.50 = 7,756.50 : x
  2. Step 2: Convert to fraction form
    28,533.54/42,802.50 = 7,756.50/x
  3. Step 3: Cross multiply
    28,533.54x = 42,802.50 × 7,756.50
  4. Step 4: Simplify right side
    28,533.54x = 331,997,591.25
  5. Step 5: Solve for x
    x = 331,997,591.25/28,533.54
  6. Step 6: Final answer
    x = 11,635.35

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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.