Home / 12,889.36-19,330.88-3,529.40

Finding the Fourth Proportional to 12,889.36, 19,330.88 and 3,529.40

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Solution

The fourth proportional to 12,889.36, 19,330.88 and 3,529.40 is: 5,293.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.36 : 19,330.88 = 3,529.40 : x
  2. Step 2: Convert to fraction form
    12,889.36/19,330.88 = 3,529.40/x
  3. Step 3: Cross multiply
    12,889.36x = 19,330.88 × 3,529.40
  4. Step 4: Simplify right side
    12,889.36x = 68,226,407.87
  5. Step 5: Solve for x
    x = 68,226,407.87/12,889.36
  6. Step 6: Final answer
    x = 5,293.23

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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.