Home / 14,278.78-19,705.00-8,542.15

Finding the Fourth Proportional to 14,278.78, 19,705.00 and 8,542.15

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Solution

The fourth proportional to 14,278.78, 19,705.00 and 8,542.15 is: 11,788.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.78 : 19,705.00 = 8,542.15 : x
  2. Step 2: Convert to fraction form
    14,278.78/19,705.00 = 8,542.15/x
  3. Step 3: Cross multiply
    14,278.78x = 19,705.00 × 8,542.15
  4. Step 4: Simplify right side
    14,278.78x = 168,322,969.32
  5. Step 5: Solve for x
    x = 168,322,969.32/14,278.78
  6. Step 6: Final answer
    x = 11,788.33

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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.