Home / 21,820.35-30,110.94-12,260.63

Finding the Fourth Proportional to 21,820.35, 30,110.94 and 12,260.63

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Solution

The fourth proportional to 21,820.35, 30,110.94 and 12,260.63 is: 16,919.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,820.35 : 30,110.94 = 12,260.63 : x
  2. Step 2: Convert to fraction form
    21,820.35/30,110.94 = 12,260.63/x
  3. Step 3: Cross multiply
    21,820.35x = 30,110.94 × 12,260.63
  4. Step 4: Simplify right side
    21,820.35x = 369,178,943.74
  5. Step 5: Solve for x
    x = 369,178,943.74/21,820.35
  6. Step 6: Final answer
    x = 16,919.02

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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.