Home / 28,648.96-39,520.64-18,018.56

Finding the Fourth Proportional to 28,648.96, 39,520.64 and 18,018.56

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Solution

The fourth proportional to 28,648.96, 39,520.64 and 18,018.56 is: 24,856.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.96 : 39,520.64 = 18,018.56 : x
  2. Step 2: Convert to fraction form
    28,648.96/39,520.64 = 18,018.56/x
  3. Step 3: Cross multiply
    28,648.96x = 39,520.64 × 18,018.56
  4. Step 4: Simplify right side
    28,648.96x = 712,105,023.08
  5. Step 5: Solve for x
    x = 712,105,023.08/28,648.96
  6. Step 6: Final answer
    x = 24,856.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.