Home / 21,950.06-30,291.08-11,878.50

Finding the Fourth Proportional to 21,950.06, 30,291.08 and 11,878.50

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Solution

The fourth proportional to 21,950.06, 30,291.08 and 11,878.50 is: 16,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950.06 : 30,291.08 = 11,878.50 : x
  2. Step 2: Convert to fraction form
    21,950.06/30,291.08 = 11,878.50/x
  3. Step 3: Cross multiply
    21,950.06x = 30,291.08 × 11,878.50
  4. Step 4: Simplify right side
    21,950.06x = 359,812,643.93
  5. Step 5: Solve for x
    x = 359,812,643.93/21,950.06
  6. Step 6: Final answer
    x = 16,392.33

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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.