Home / 13,813.53-19,069.05-8,146.36

Finding the Fourth Proportional to 13,813.53, 19,069.05 and 8,146.36

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Solution

The fourth proportional to 13,813.53, 19,069.05 and 8,146.36 is: 11,245.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.53 : 19,069.05 = 8,146.36 : x
  2. Step 2: Convert to fraction form
    13,813.53/19,069.05 = 8,146.36/x
  3. Step 3: Cross multiply
    13,813.53x = 19,069.05 × 8,146.36
  4. Step 4: Simplify right side
    13,813.53x = 155,343,346.16
  5. Step 5: Solve for x
    x = 155,343,346.16/13,813.53
  6. Step 6: Final answer
    x = 11,245.74

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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.