Home / 21,001.98-28,986.94-12,055.54

Finding the Fourth Proportional to 21,001.98, 28,986.94 and 12,055.54

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Solution

The fourth proportional to 21,001.98, 28,986.94 and 12,055.54 is: 16,639.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.98 : 28,986.94 = 12,055.54 : x
  2. Step 2: Convert to fraction form
    21,001.98/28,986.94 = 12,055.54/x
  3. Step 3: Cross multiply
    21,001.98x = 28,986.94 × 12,055.54
  4. Step 4: Simplify right side
    21,001.98x = 349,453,214.65
  5. Step 5: Solve for x
    x = 349,453,214.65/21,001.98
  6. Step 6: Final answer
    x = 16,639.06

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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.