Home / 13,718.05-18,930.75-8,051.80

Finding the Fourth Proportional to 13,718.05, 18,930.75 and 8,051.80

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Solution

The fourth proportional to 13,718.05, 18,930.75 and 8,051.80 is: 11,111.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.05 : 18,930.75 = 8,051.80 : x
  2. Step 2: Convert to fraction form
    13,718.05/18,930.75 = 8,051.80/x
  3. Step 3: Cross multiply
    13,718.05x = 18,930.75 × 8,051.80
  4. Step 4: Simplify right side
    13,718.05x = 152,426,612.85
  5. Step 5: Solve for x
    x = 152,426,612.85/13,718.05
  6. Step 6: Final answer
    x = 11,111.39

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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.