Home / 13,703.96-18,920.40-8,401.70

Finding the Fourth Proportional to 13,703.96, 18,920.40 and 8,401.70

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Solution

The fourth proportional to 13,703.96, 18,920.40 and 8,401.70 is: 11,599.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.96 : 18,920.40 = 8,401.70 : x
  2. Step 2: Convert to fraction form
    13,703.96/18,920.40 = 8,401.70/x
  3. Step 3: Cross multiply
    13,703.96x = 18,920.40 × 8,401.70
  4. Step 4: Simplify right side
    13,703.96x = 158,963,524.68
  5. Step 5: Solve for x
    x = 158,963,524.68/13,703.96
  6. Step 6: Final answer
    x = 11,599.82

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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.