Home / 28,530.72-39,370.56-15,953.28

Finding the Fourth Proportional to 28,530.72, 39,370.56 and 15,953.28

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Solution

The fourth proportional to 28,530.72, 39,370.56 and 15,953.28 is: 22,014.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.72 : 39,370.56 = 15,953.28 : x
  2. Step 2: Convert to fraction form
    28,530.72/39,370.56 = 15,953.28/x
  3. Step 3: Cross multiply
    28,530.72x = 39,370.56 × 15,953.28
  4. Step 4: Simplify right side
    28,530.72x = 628,089,567.44
  5. Step 5: Solve for x
    x = 628,089,567.44/28,530.72
  6. Step 6: Final answer
    x = 22,014.50

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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.