Home / 21,807.76-30,104.84-12,852.24

Finding the Fourth Proportional to 21,807.76, 30,104.84 and 12,852.24

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Solution

The fourth proportional to 21,807.76, 30,104.84 and 12,852.24 is: 17,742.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,807.76 : 30,104.84 = 12,852.24 : x
  2. Step 2: Convert to fraction form
    21,807.76/30,104.84 = 12,852.24/x
  3. Step 3: Cross multiply
    21,807.76x = 30,104.84 × 12,852.24
  4. Step 4: Simplify right side
    21,807.76x = 386,914,628.84
  5. Step 5: Solve for x
    x = 386,914,628.84/21,807.76
  6. Step 6: Final answer
    x = 17,742.06

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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.