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Finding the Fourth Proportional to 28,746.38, 43,119.57 and 7,969.88

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Solution

The fourth proportional to 28,746.38, 43,119.57 and 7,969.88 is: 11,954.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,746.38 : 43,119.57 = 7,969.88 : x
  2. Step 2: Convert to fraction form
    28,746.38/43,119.57 = 7,969.88/x
  3. Step 3: Cross multiply
    28,746.38x = 43,119.57 × 7,969.88
  4. Step 4: Simplify right side
    28,746.38x = 343,657,798.55
  5. Step 5: Solve for x
    x = 343,657,798.55/28,746.38
  6. Step 6: Final answer
    x = 11,954.82

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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.