Home / 28,837.06-39,736.09-21,271.40

Finding the Fourth Proportional to 28,837.06, 39,736.09 and 21,271.40

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Solution

The fourth proportional to 28,837.06, 39,736.09 and 21,271.40 is: 29,310.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,837.06 : 39,736.09 = 21,271.40 : x
  2. Step 2: Convert to fraction form
    28,837.06/39,736.09 = 21,271.40/x
  3. Step 3: Cross multiply
    28,837.06x = 39,736.09 × 21,271.40
  4. Step 4: Simplify right side
    28,837.06x = 845,242,264.83
  5. Step 5: Solve for x
    x = 845,242,264.83/28,837.06
  6. Step 6: Final answer
    x = 29,310.97

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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.