Home / 19,429.88-29,102.70-12,036.20

Finding the Fourth Proportional to 19,429.88, 29,102.70 and 12,036.20

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Solution

The fourth proportional to 19,429.88, 29,102.70 and 12,036.20 is: 18,028.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,429.88 : 29,102.70 = 12,036.20 : x
  2. Step 2: Convert to fraction form
    19,429.88/29,102.70 = 12,036.20/x
  3. Step 3: Cross multiply
    19,429.88x = 29,102.70 × 12,036.20
  4. Step 4: Simplify right side
    19,429.88x = 350,285,917.74
  5. Step 5: Solve for x
    x = 350,285,917.74/19,429.88
  6. Step 6: Final answer
    x = 18,028.21

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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.