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Finding the Fourth Proportional to 14,612.12, 21,920.12 and 4,748.07

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Solution

The fourth proportional to 14,612.12, 21,920.12 and 4,748.07 is: 7,122.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,612.12 : 21,920.12 = 4,748.07 : x
  2. Step 2: Convert to fraction form
    14,612.12/21,920.12 = 4,748.07/x
  3. Step 3: Cross multiply
    14,612.12x = 21,920.12 × 4,748.07
  4. Step 4: Simplify right side
    14,612.12x = 104,078,217.13
  5. Step 5: Solve for x
    x = 104,078,217.13/14,612.12
  6. Step 6: Final answer
    x = 7,122.73

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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.