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Finding the Fourth Proportional to 28,443.60, 42,652.60 and 10,907.60

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Solution

The fourth proportional to 28,443.60, 42,652.60 and 10,907.60 is: 16,356.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.60 : 42,652.60 = 10,907.60 : x
  2. Step 2: Convert to fraction form
    28,443.60/42,652.60 = 10,907.60/x
  3. Step 3: Cross multiply
    28,443.60x = 42,652.60 × 10,907.60
  4. Step 4: Simplify right side
    28,443.60x = 465,237,499.76
  5. Step 5: Solve for x
    x = 465,237,499.76/28,443.60
  6. Step 6: Final answer
    x = 16,356.49

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1.5x scale

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.