Home / 19,237.40-28,866.90-8,142.20

Finding the Fourth Proportional to 19,237.40, 28,866.90 and 8,142.20

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Solution

The fourth proportional to 19,237.40, 28,866.90 and 8,142.20 is: 12,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,237.40 : 28,866.90 = 8,142.20 : x
  2. Step 2: Convert to fraction form
    19,237.40/28,866.90 = 8,142.20/x
  3. Step 3: Cross multiply
    19,237.40x = 28,866.90 × 8,142.20
  4. Step 4: Simplify right side
    19,237.40x = 235,040,073.18
  5. Step 5: Solve for x
    x = 235,040,073.18/19,237.40
  6. Step 6: Final answer
    x = 12,217.87

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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.