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Finding the Fourth Proportional to 12,828.17, 19,243.02 and 12,130.04

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Solution

The fourth proportional to 12,828.17, 19,243.02 and 12,130.04 is: 18,195.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,828.17 : 19,243.02 = 12,130.04 : x
  2. Step 2: Convert to fraction form
    12,828.17/19,243.02 = 12,130.04/x
  3. Step 3: Cross multiply
    12,828.17x = 19,243.02 × 12,130.04
  4. Step 4: Simplify right side
    12,828.17x = 233,418,602.32
  5. Step 5: Solve for x
    x = 233,418,602.32/12,828.17
  6. Step 6: Final answer
    x = 18,195.78

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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.