Home / 21,816.06-30,106.16-12,125.51

Finding the Fourth Proportional to 21,816.06, 30,106.16 and 12,125.51

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Solution

The fourth proportional to 21,816.06, 30,106.16 and 12,125.51 is: 16,733.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,816.06 : 30,106.16 = 12,125.51 : x
  2. Step 2: Convert to fraction form
    21,816.06/30,106.16 = 12,125.51/x
  3. Step 3: Cross multiply
    21,816.06x = 30,106.16 × 12,125.51
  4. Step 4: Simplify right side
    21,816.06x = 365,052,728.91
  5. Step 5: Solve for x
    x = 365,052,728.91/21,816.06
  6. Step 6: Final answer
    x = 16,733.21

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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.