Home / 14,268.54-19,690.62-7,980.50

Finding the Fourth Proportional to 14,268.54, 19,690.62 and 7,980.50

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Solution

The fourth proportional to 14,268.54, 19,690.62 and 7,980.50 is: 11,013.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,268.54 : 19,690.62 = 7,980.50 : x
  2. Step 2: Convert to fraction form
    14,268.54/19,690.62 = 7,980.50/x
  3. Step 3: Cross multiply
    14,268.54x = 19,690.62 × 7,980.50
  4. Step 4: Simplify right side
    14,268.54x = 157,140,992.91
  5. Step 5: Solve for x
    x = 157,140,992.91/14,268.54
  6. Step 6: Final answer
    x = 11,013.11

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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.