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Finding the Fourth Proportional to 28,533.92, 42,785.34 and 8,808.80

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Solution

The fourth proportional to 28,533.92, 42,785.34 and 8,808.80 is: 13,208.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,533.92 : 42,785.34 = 8,808.80 : x
  2. Step 2: Convert to fraction form
    28,533.92/42,785.34 = 8,808.80/x
  3. Step 3: Cross multiply
    28,533.92x = 42,785.34 × 8,808.80
  4. Step 4: Simplify right side
    28,533.92x = 376,887,502.99
  5. Step 5: Solve for x
    x = 376,887,502.99/28,533.92
  6. Step 6: Final answer
    x = 13,208.40

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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.