Home / 28,702.51-39,609.94-15,782.33

Finding the Fourth Proportional to 28,702.51, 39,609.94 and 15,782.33

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Solution

The fourth proportional to 28,702.51, 39,609.94 and 15,782.33 is: 21,779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,702.51 : 39,609.94 = 15,782.33 : x
  2. Step 2: Convert to fraction form
    28,702.51/39,609.94 = 15,782.33/x
  3. Step 3: Cross multiply
    28,702.51x = 39,609.94 × 15,782.33
  4. Step 4: Simplify right side
    28,702.51x = 625,137,144.36
  5. Step 5: Solve for x
    x = 625,137,144.36/28,702.51
  6. Step 6: Final answer
    x = 21,779.88

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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.