Home / 28,284.51-39,032.72-15,709.26

Finding the Fourth Proportional to 28,284.51, 39,032.72 and 15,709.26

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Solution

The fourth proportional to 28,284.51, 39,032.72 and 15,709.26 is: 21,678.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.51 : 39,032.72 = 15,709.26 : x
  2. Step 2: Convert to fraction form
    28,284.51/39,032.72 = 15,709.26/x
  3. Step 3: Cross multiply
    28,284.51x = 39,032.72 × 15,709.26
  4. Step 4: Simplify right side
    28,284.51x = 613,175,068.44
  5. Step 5: Solve for x
    x = 613,175,068.44/28,284.51
  6. Step 6: Final answer
    x = 21,678.83

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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.