Home / 21,028.87-29,019.63-12,079.18

Finding the Fourth Proportional to 21,028.87, 29,019.63 and 12,079.18

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Solution

The fourth proportional to 21,028.87, 29,019.63 and 12,079.18 is: 16,669.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.87 : 29,019.63 = 12,079.18 : x
  2. Step 2: Convert to fraction form
    21,028.87/29,019.63 = 12,079.18/x
  3. Step 3: Cross multiply
    21,028.87x = 29,019.63 × 12,079.18
  4. Step 4: Simplify right side
    21,028.87x = 350,533,334.30
  5. Step 5: Solve for x
    x = 350,533,334.30/21,028.87
  6. Step 6: Final answer
    x = 16,669.15

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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.