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Finding the Fourth Proportional to 29,190, 40,289.40 and 16,622.16

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Solution

The fourth proportional to 29,190, 40,289.40 and 16,622.16 is: 22,942.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,190 : 40,289.40 = 16,622.16 : x
  2. Step 2: Convert to fraction form
    29,190/40,289.40 = 16,622.16/x
  3. Step 3: Cross multiply
    29,190x = 40,289.40 × 16,622.16
  4. Step 4: Simplify right side
    29,190x = 669,696,853.10
  5. Step 5: Solve for x
    x = 669,696,853.10/29,190
  6. Step 6: Final answer
    x = 22,942.68

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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.