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Finding the Fourth Proportional to 19,438.40, 29,114.40 and 16,846.40

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Solution

The fourth proportional to 19,438.40, 29,114.40 and 16,846.40 is: 25,232.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,438.40 : 29,114.40 = 16,846.40 : x
  2. Step 2: Convert to fraction form
    19,438.40/29,114.40 = 16,846.40/x
  3. Step 3: Cross multiply
    19,438.40x = 29,114.40 × 16,846.40
  4. Step 4: Simplify right side
    19,438.40x = 490,472,828.16
  5. Step 5: Solve for x
    x = 490,472,828.16/19,438.40
  6. Step 6: Final answer
    x = 25,232.16

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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.