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Finding the Fourth Proportional to 22,289.50, 30,759.51 and 12,859.48

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Solution

The fourth proportional to 22,289.50, 30,759.51 and 12,859.48 is: 17,746.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,289.50 : 30,759.51 = 12,859.48 : x
  2. Step 2: Convert to fraction form
    22,289.50/30,759.51 = 12,859.48/x
  3. Step 3: Cross multiply
    22,289.50x = 30,759.51 × 12,859.48
  4. Step 4: Simplify right side
    22,289.50x = 395,551,303.65
  5. Step 5: Solve for x
    x = 395,551,303.65/22,289.50
  6. Step 6: Final answer
    x = 17,746.08

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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.