Home / 12,865.36-19,298.40-3,631.36

Finding the Fourth Proportional to 12,865.36, 19,298.40 and 3,631.36

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Solution

The fourth proportional to 12,865.36, 19,298.40 and 3,631.36 is: 5,447.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.36 : 19,298.40 = 3,631.36 : x
  2. Step 2: Convert to fraction form
    12,865.36/19,298.40 = 3,631.36/x
  3. Step 3: Cross multiply
    12,865.36x = 19,298.40 × 3,631.36
  4. Step 4: Simplify right side
    12,865.36x = 70,079,437.82
  5. Step 5: Solve for x
    x = 70,079,437.82/12,865.36
  6. Step 6: Final answer
    x = 5,447.14

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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.