Home / 19,217.70-28,829.52-8,123.40

Finding the Fourth Proportional to 19,217.70, 28,829.52 and 8,123.40

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Solution

The fourth proportional to 19,217.70, 28,829.52 and 8,123.40 is: 12,186.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,217.70 : 28,829.52 = 8,123.40 : x
  2. Step 2: Convert to fraction form
    19,217.70/28,829.52 = 8,123.40/x
  3. Step 3: Cross multiply
    19,217.70x = 28,829.52 × 8,123.40
  4. Step 4: Simplify right side
    19,217.70x = 234,193,722.77
  5. Step 5: Solve for x
    x = 234,193,722.77/19,217.70
  6. Step 6: Final answer
    x = 12,186.36

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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.