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Finding the Fourth Proportional to 28,649.40, 42,973.97 and 8,927.97

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Solution

The fourth proportional to 28,649.40, 42,973.97 and 8,927.97 is: 13,391.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,649.40 : 42,973.97 = 8,927.97 : x
  2. Step 2: Convert to fraction form
    28,649.40/42,973.97 = 8,927.97/x
  3. Step 3: Cross multiply
    28,649.40x = 42,973.97 × 8,927.97
  4. Step 4: Simplify right side
    28,649.40x = 383,670,055.43
  5. Step 5: Solve for x
    x = 383,670,055.43/28,649.40
  6. Step 6: Final answer
    x = 13,391.91

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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.