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Finding the Fourth Proportional to 28,416.92, 42,623.84 and 8,695.48

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Solution

The fourth proportional to 28,416.92, 42,623.84 and 8,695.48 is: 13,042.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,416.92 : 42,623.84 = 8,695.48 : x
  2. Step 2: Convert to fraction form
    28,416.92/42,623.84 = 8,695.48/x
  3. Step 3: Cross multiply
    28,416.92x = 42,623.84 × 8,695.48
  4. Step 4: Simplify right side
    28,416.92x = 370,634,748.24
  5. Step 5: Solve for x
    x = 370,634,748.24/28,416.92
  6. Step 6: Final answer
    x = 13,042.75

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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.