Home / 12,193.40-18,290.12-10,357.36

Finding the Fourth Proportional to 12,193.40, 18,290.12 and 10,357.36

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Solution

The fourth proportional to 12,193.40, 18,290.12 and 10,357.36 is: 15,536.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,193.40 : 18,290.12 = 10,357.36 : x
  2. Step 2: Convert to fraction form
    12,193.40/18,290.12 = 10,357.36/x
  3. Step 3: Cross multiply
    12,193.40x = 18,290.12 × 10,357.36
  4. Step 4: Simplify right side
    12,193.40x = 189,437,259.77
  5. Step 5: Solve for x
    x = 189,437,259.77/12,193.40
  6. Step 6: Final answer
    x = 15,536.05

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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.