Home / 21,894.22-30,215.19-12,465.82

Finding the Fourth Proportional to 21,894.22, 30,215.19 and 12,465.82

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Solution

The fourth proportional to 21,894.22, 30,215.19 and 12,465.82 is: 17,203.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,894.22 : 30,215.19 = 12,465.82 : x
  2. Step 2: Convert to fraction form
    21,894.22/30,215.19 = 12,465.82/x
  3. Step 3: Cross multiply
    21,894.22x = 30,215.19 × 12,465.82
  4. Step 4: Simplify right side
    21,894.22x = 376,657,119.81
  5. Step 5: Solve for x
    x = 376,657,119.81/21,894.22
  6. Step 6: Final answer
    x = 17,203.50

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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.