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Finding the Fourth Proportional to 28,612.56, 42,889.56 and 11,075.60

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Solution

The fourth proportional to 28,612.56, 42,889.56 and 11,075.60 is: 16,602.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,612.56 : 42,889.56 = 11,075.60 : x
  2. Step 2: Convert to fraction form
    28,612.56/42,889.56 = 11,075.60/x
  3. Step 3: Cross multiply
    28,612.56x = 42,889.56 × 11,075.60
  4. Step 4: Simplify right side
    28,612.56x = 475,027,610.74
  5. Step 5: Solve for x
    x = 475,027,610.74/28,612.56
  6. Step 6: Final answer
    x = 16,602.07

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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.