Home / 13,955.96-19,259.57-7,989.56

Finding the Fourth Proportional to 13,955.96, 19,259.57 and 7,989.56

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Solution

The fourth proportional to 13,955.96, 19,259.57 and 7,989.56 is: 11,025.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.96 : 19,259.57 = 7,989.56 : x
  2. Step 2: Convert to fraction form
    13,955.96/19,259.57 = 7,989.56/x
  3. Step 3: Cross multiply
    13,955.96x = 19,259.57 × 7,989.56
  4. Step 4: Simplify right side
    13,955.96x = 153,875,353.84
  5. Step 5: Solve for x
    x = 153,875,353.84/13,955.96
  6. Step 6: Final answer
    x = 11,025.78

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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.