Home / 13,958.06-19,261.86-7,990.16

Finding the Fourth Proportional to 13,958.06, 19,261.86 and 7,990.16

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Solution

The fourth proportional to 13,958.06, 19,261.86 and 7,990.16 is: 11,026.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,958.06 : 19,261.86 = 7,990.16 : x
  2. Step 2: Convert to fraction form
    13,958.06/19,261.86 = 7,990.16/x
  3. Step 3: Cross multiply
    13,958.06x = 19,261.86 × 7,990.16
  4. Step 4: Simplify right side
    13,958.06x = 153,905,343.30
  5. Step 5: Solve for x
    x = 153,905,343.30/13,958.06
  6. Step 6: Final answer
    x = 11,026.27

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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.