Home / 14,493.48-19,999.26-8,120.40

Finding the Fourth Proportional to 14,493.48, 19,999.26 and 8,120.40

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Solution

The fourth proportional to 14,493.48, 19,999.26 and 8,120.40 is: 11,205.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,493.48 : 19,999.26 = 8,120.40 : x
  2. Step 2: Convert to fraction form
    14,493.48/19,999.26 = 8,120.40/x
  3. Step 3: Cross multiply
    14,493.48x = 19,999.26 × 8,120.40
  4. Step 4: Simplify right side
    14,493.48x = 162,401,990.90
  5. Step 5: Solve for x
    x = 162,401,990.90/14,493.48
  6. Step 6: Final answer
    x = 11,205.18

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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.