Home / 21,794.12-30,069.25-12,838.35

Finding the Fourth Proportional to 21,794.12, 30,069.25 and 12,838.35

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Solution

The fourth proportional to 21,794.12, 30,069.25 and 12,838.35 is: 17,713.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,794.12 : 30,069.25 = 12,838.35 : x
  2. Step 2: Convert to fraction form
    21,794.12/30,069.25 = 12,838.35/x
  3. Step 3: Cross multiply
    21,794.12x = 30,069.25 × 12,838.35
  4. Step 4: Simplify right side
    21,794.12x = 386,039,555.74
  5. Step 5: Solve for x
    x = 386,039,555.74/21,794.12
  6. Step 6: Final answer
    x = 17,713.01

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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.