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Finding the Fourth Proportional to 16,240.68, 22,412.18 and 8,788.68

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Solution

The fourth proportional to 16,240.68, 22,412.18 and 8,788.68 is: 12,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,240.68 : 22,412.18 = 8,788.68 : x
  2. Step 2: Convert to fraction form
    16,240.68/22,412.18 = 8,788.68/x
  3. Step 3: Cross multiply
    16,240.68x = 22,412.18 × 8,788.68
  4. Step 4: Simplify right side
    16,240.68x = 196,973,478.12
  5. Step 5: Solve for x
    x = 196,973,478.12/16,240.68
  6. Step 6: Final answer
    x = 12,128.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.