Home / 13,394.58-20,111.49-13,158.36

Finding the Fourth Proportional to 13,394.58, 20,111.49 and 13,158.36

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Solution

The fourth proportional to 13,394.58, 20,111.49 and 13,158.36 is: 19,756.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.58 : 20,111.49 = 13,158.36 : x
  2. Step 2: Convert to fraction form
    13,394.58/20,111.49 = 13,158.36/x
  3. Step 3: Cross multiply
    13,394.58x = 20,111.49 × 13,158.36
  4. Step 4: Simplify right side
    13,394.58x = 264,634,225.56
  5. Step 5: Solve for x
    x = 264,634,225.56/13,394.58
  6. Step 6: Final answer
    x = 19,756.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.