Home / 28,554.90-39,400.18-17,938.39

Finding the Fourth Proportional to 28,554.90, 39,400.18 and 17,938.39

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Solution

The fourth proportional to 28,554.90, 39,400.18 and 17,938.39 is: 24,751.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.90 : 39,400.18 = 17,938.39 : x
  2. Step 2: Convert to fraction form
    28,554.90/39,400.18 = 17,938.39/x
  3. Step 3: Cross multiply
    28,554.90x = 39,400.18 × 17,938.39
  4. Step 4: Simplify right side
    28,554.90x = 706,775,794.91
  5. Step 5: Solve for x
    x = 706,775,794.91/28,554.90
  6. Step 6: Final answer
    x = 24,751.47

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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.