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Finding the Fourth Proportional to 28,907.32, 43,360.98 and 8,130.82

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Solution

The fourth proportional to 28,907.32, 43,360.98 and 8,130.82 is: 12,196.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,907.32 : 43,360.98 = 8,130.82 : x
  2. Step 2: Convert to fraction form
    28,907.32/43,360.98 = 8,130.82/x
  3. Step 3: Cross multiply
    28,907.32x = 43,360.98 × 8,130.82
  4. Step 4: Simplify right side
    28,907.32x = 352,560,323.40
  5. Step 5: Solve for x
    x = 352,560,323.40/28,907.32
  6. Step 6: Final answer
    x = 12,196.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.