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Finding the Fourth Proportional to 29,228.40, 43,826.40 and 12,585.60

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Solution

The fourth proportional to 29,228.40, 43,826.40 and 12,585.60 is: 18,871.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,228.40 : 43,826.40 = 12,585.60 : x
  2. Step 2: Convert to fraction form
    29,228.40/43,826.40 = 12,585.60/x
  3. Step 3: Cross multiply
    29,228.40x = 43,826.40 × 12,585.60
  4. Step 4: Simplify right side
    29,228.40x = 551,581,539.84
  5. Step 5: Solve for x
    x = 551,581,539.84/29,228.40
  6. Step 6: Final answer
    x = 18,871.42

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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.