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Finding the Fourth Proportional to 16,228.40, 22,781.20 and 16,228.40

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Solution

The fourth proportional to 16,228.40, 22,781.20 and 16,228.40 is: 22,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,228.40 : 22,781.20 = 16,228.40 : x
  2. Step 2: Convert to fraction form
    16,228.40/22,781.20 = 16,228.40/x
  3. Step 3: Cross multiply
    16,228.40x = 22,781.20 × 16,228.40
  4. Step 4: Simplify right side
    16,228.40x = 369,702,426.08
  5. Step 5: Solve for x
    x = 369,702,426.08/16,228.40
  6. Step 6: Final answer
    x = 22,781.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.