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Finding the Fourth Proportional to 28,272.60, 39,529.80 and 28,272.60

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Solution

The fourth proportional to 28,272.60, 39,529.80 and 28,272.60 is: 39,529.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.60 : 39,529.80 = 28,272.60 : x
  2. Step 2: Convert to fraction form
    28,272.60/39,529.80 = 28,272.60/x
  3. Step 3: Cross multiply
    28,272.60x = 39,529.80 × 28,272.60
  4. Step 4: Simplify right side
    28,272.60x = 1,117,610,223.48
  5. Step 5: Solve for x
    x = 1,117,610,223.48/28,272.60
  6. Step 6: Final answer
    x = 39,529.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.