Home / 19,143.90-28,667.58-12,102.54

Finding the Fourth Proportional to 19,143.90, 28,667.58 and 12,102.54

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Solution

The fourth proportional to 19,143.90, 28,667.58 and 12,102.54 is: 18,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.90 : 28,667.58 = 12,102.54 : x
  2. Step 2: Convert to fraction form
    19,143.90/28,667.58 = 12,102.54/x
  3. Step 3: Cross multiply
    19,143.90x = 28,667.58 × 12,102.54
  4. Step 4: Simplify right side
    19,143.90x = 346,950,533.65
  5. Step 5: Solve for x
    x = 346,950,533.65/19,143.90
  6. Step 6: Final answer
    x = 18,123.29

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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.