Home / 28,353.93-39,128.57-15,608.40

Finding the Fourth Proportional to 28,353.93, 39,128.57 and 15,608.40

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Solution

The fourth proportional to 28,353.93, 39,128.57 and 15,608.40 is: 21,539.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.93 : 39,128.57 = 15,608.40 : x
  2. Step 2: Convert to fraction form
    28,353.93/39,128.57 = 15,608.40/x
  3. Step 3: Cross multiply
    28,353.93x = 39,128.57 × 15,608.40
  4. Step 4: Simplify right side
    28,353.93x = 610,734,176.48
  5. Step 5: Solve for x
    x = 610,734,176.48/28,353.93
  6. Step 6: Final answer
    x = 21,539.66

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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.