Home / 19,216.20-28,856.70-12,671.40

Finding the Fourth Proportional to 19,216.20, 28,856.70 and 12,671.40

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Solution

The fourth proportional to 19,216.20, 28,856.70 and 12,671.40 is: 19,028.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,216.20 : 28,856.70 = 12,671.40 : x
  2. Step 2: Convert to fraction form
    19,216.20/28,856.70 = 12,671.40/x
  3. Step 3: Cross multiply
    19,216.20x = 28,856.70 × 12,671.40
  4. Step 4: Simplify right side
    19,216.20x = 365,654,788.38
  5. Step 5: Solve for x
    x = 365,654,788.38/19,216.20
  6. Step 6: Final answer
    x = 19,028.46

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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.