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Finding the Fourth Proportional to 22,421.51, 30,941.07 and 12,863.00

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Solution

The fourth proportional to 22,421.51, 30,941.07 and 12,863.00 is: 17,750.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,421.51 : 30,941.07 = 12,863.00 : x
  2. Step 2: Convert to fraction form
    22,421.51/30,941.07 = 12,863.00/x
  3. Step 3: Cross multiply
    22,421.51x = 30,941.07 × 12,863.00
  4. Step 4: Simplify right side
    22,421.51x = 397,994,828.70
  5. Step 5: Solve for x
    x = 397,994,828.70/22,421.51
  6. Step 6: Final answer
    x = 17,750.58

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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.