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Finding the Fourth Proportional to 28,535.37, 42,808.41 and 8,809.30

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Solution

The fourth proportional to 28,535.37, 42,808.41 and 8,809.30 is: 13,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.37 : 42,808.41 = 8,809.30 : x
  2. Step 2: Convert to fraction form
    28,535.37/42,808.41 = 8,809.30/x
  3. Step 3: Cross multiply
    28,535.37x = 42,808.41 × 8,809.30
  4. Step 4: Simplify right side
    28,535.37x = 377,112,126.21
  5. Step 5: Solve for x
    x = 377,112,126.21/28,535.37
  6. Step 6: Final answer
    x = 13,215.60

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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.