Home / 13,956.54-19,261.38-7,989.06

Finding the Fourth Proportional to 13,956.54, 19,261.38 and 7,989.06

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Solution

The fourth proportional to 13,956.54, 19,261.38 and 7,989.06 is: 11,025.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.54 : 19,261.38 = 7,989.06 : x
  2. Step 2: Convert to fraction form
    13,956.54/19,261.38 = 7,989.06/x
  3. Step 3: Cross multiply
    13,956.54x = 19,261.38 × 7,989.06
  4. Step 4: Simplify right side
    13,956.54x = 153,880,320.50
  5. Step 5: Solve for x
    x = 153,880,320.50/13,956.54
  6. Step 6: Final answer
    x = 11,025.68

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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.