Home / 28,529.12-42,797.78-8,809.20

Finding the Fourth Proportional to 28,529.12, 42,797.78 and 8,809.20

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Solution

The fourth proportional to 28,529.12, 42,797.78 and 8,809.20 is: 13,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,529.12 : 42,797.78 = 8,809.20 : x
  2. Step 2: Convert to fraction form
    28,529.12/42,797.78 = 8,809.20/x
  3. Step 3: Cross multiply
    28,529.12x = 42,797.78 × 8,809.20
  4. Step 4: Simplify right side
    28,529.12x = 377,014,203.58
  5. Step 5: Solve for x
    x = 377,014,203.58/28,529.12
  6. Step 6: Final answer
    x = 13,215.07

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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.