Home / 13,274.81-18,315.92-8,427.77

Finding the Fourth Proportional to 13,274.81, 18,315.92 and 8,427.77

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Solution

The fourth proportional to 13,274.81, 18,315.92 and 8,427.77 is: 11,628.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,274.81 : 18,315.92 = 8,427.77 : x
  2. Step 2: Convert to fraction form
    13,274.81/18,315.92 = 8,427.77/x
  3. Step 3: Cross multiply
    13,274.81x = 18,315.92 × 8,427.77
  4. Step 4: Simplify right side
    13,274.81x = 154,362,361.10
  5. Step 5: Solve for x
    x = 154,362,361.10/13,274.81
  6. Step 6: Final answer
    x = 11,628.22

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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.