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Finding the Fourth Proportional to 29,370.40, 40,583.68 and 21,847.12

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Solution

The fourth proportional to 29,370.40, 40,583.68 and 21,847.12 is: 30,188.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,370.40 : 40,583.68 = 21,847.12 : x
  2. Step 2: Convert to fraction form
    29,370.40/40,583.68 = 21,847.12/x
  3. Step 3: Cross multiply
    29,370.40x = 40,583.68 × 21,847.12
  4. Step 4: Simplify right side
    29,370.40x = 886,636,527.00
  5. Step 5: Solve for x
    x = 886,636,527.00/29,370.40
  6. Step 6: Final answer
    x = 30,188.10

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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.