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Finding the Fourth Proportional to 14,361.30, 19,828.80 and 10,400.40

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Solution

The fourth proportional to 14,361.30, 19,828.80 and 10,400.40 is: 14,359.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,361.30 : 19,828.80 = 10,400.40 : x
  2. Step 2: Convert to fraction form
    14,361.30/19,828.80 = 10,400.40/x
  3. Step 3: Cross multiply
    14,361.30x = 19,828.80 × 10,400.40
  4. Step 4: Simplify right side
    14,361.30x = 206,227,451.52
  5. Step 5: Solve for x
    x = 206,227,451.52/14,361.30
  6. Step 6: Final answer
    x = 14,359.94

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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.