Home / 13,071.80-18,039.26-7,103.58

Finding the Fourth Proportional to 13,071.80, 18,039.26 and 7,103.58

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Solution

The fourth proportional to 13,071.80, 18,039.26 and 7,103.58 is: 9,803.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071.80 : 18,039.26 = 7,103.58 : x
  2. Step 2: Convert to fraction form
    13,071.80/18,039.26 = 7,103.58/x
  3. Step 3: Cross multiply
    13,071.80x = 18,039.26 × 7,103.58
  4. Step 4: Simplify right side
    13,071.80x = 128,143,326.55
  5. Step 5: Solve for x
    x = 128,143,326.55/13,071.80
  6. Step 6: Final answer
    x = 9,803.04

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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.