Home / 15,870.22-21,850.95-12,081.24

Finding the Fourth Proportional to 15,870.22, 21,850.95 and 12,081.24

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Solution

The fourth proportional to 15,870.22, 21,850.95 and 12,081.24 is: 16,634.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,870.22 : 21,850.95 = 12,081.24 : x
  2. Step 2: Convert to fraction form
    15,870.22/21,850.95 = 12,081.24/x
  3. Step 3: Cross multiply
    15,870.22x = 21,850.95 × 12,081.24
  4. Step 4: Simplify right side
    15,870.22x = 263,986,571.18
  5. Step 5: Solve for x
    x = 263,986,571.18/15,870.22
  6. Step 6: Final answer
    x = 16,634.08

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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.