Home / 13,968.96-19,278.78-8,305.08

Finding the Fourth Proportional to 13,968.96, 19,278.78 and 8,305.08

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Solution

The fourth proportional to 13,968.96, 19,278.78 and 8,305.08 is: 11,461.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.96 : 19,278.78 = 8,305.08 : x
  2. Step 2: Convert to fraction form
    13,968.96/19,278.78 = 8,305.08/x
  3. Step 3: Cross multiply
    13,968.96x = 19,278.78 × 8,305.08
  4. Step 4: Simplify right side
    13,968.96x = 160,111,810.20
  5. Step 5: Solve for x
    x = 160,111,810.20/13,968.96
  6. Step 6: Final answer
    x = 11,461.97

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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.