Home / 21,749.16-30,012.41-12,794.94

Finding the Fourth Proportional to 21,749.16, 30,012.41 and 12,794.94

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Solution

The fourth proportional to 21,749.16, 30,012.41 and 12,794.94 is: 17,656.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,749.16 : 30,012.41 = 12,794.94 : x
  2. Step 2: Convert to fraction form
    21,749.16/30,012.41 = 12,794.94/x
  3. Step 3: Cross multiply
    21,749.16x = 30,012.41 × 12,794.94
  4. Step 4: Simplify right side
    21,749.16x = 384,006,914.79
  5. Step 5: Solve for x
    x = 384,006,914.79/21,749.16
  6. Step 6: Final answer
    x = 17,656.17

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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.