Home / 13,381.36-18,465.12-8,074.24

Finding the Fourth Proportional to 13,381.36, 18,465.12 and 8,074.24

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Solution

The fourth proportional to 13,381.36, 18,465.12 and 8,074.24 is: 11,141.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.36 : 18,465.12 = 8,074.24 : x
  2. Step 2: Convert to fraction form
    13,381.36/18,465.12 = 8,074.24/x
  3. Step 3: Cross multiply
    13,381.36x = 18,465.12 × 8,074.24
  4. Step 4: Simplify right side
    13,381.36x = 149,091,810.51
  5. Step 5: Solve for x
    x = 149,091,810.51/13,381.36
  6. Step 6: Final answer
    x = 11,141.75

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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.