Home / 13,894.29-20,820.51-8,341.56

Finding the Fourth Proportional to 13,894.29, 20,820.51 and 8,341.56

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Solution

The fourth proportional to 13,894.29, 20,820.51 and 8,341.56 is: 12,499.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,894.29 : 20,820.51 = 8,341.56 : x
  2. Step 2: Convert to fraction form
    13,894.29/20,820.51 = 8,341.56/x
  3. Step 3: Cross multiply
    13,894.29x = 20,820.51 × 8,341.56
  4. Step 4: Simplify right side
    13,894.29x = 173,675,533.40
  5. Step 5: Solve for x
    x = 173,675,533.40/13,894.29
  6. Step 6: Final answer
    x = 12,499.78

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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.