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Finding the Fourth Proportional to 28,896.91, 43,343.20 and 10,428.91

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Solution

The fourth proportional to 28,896.91, 43,343.20 and 10,428.91 is: 15,642.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,896.91 : 43,343.20 = 10,428.91 : x
  2. Step 2: Convert to fraction form
    28,896.91/43,343.20 = 10,428.91/x
  3. Step 3: Cross multiply
    28,896.91x = 43,343.20 × 10,428.91
  4. Step 4: Simplify right side
    28,896.91x = 452,022,331.91
  5. Step 5: Solve for x
    x = 452,022,331.91/28,896.91
  6. Step 6: Final answer
    x = 15,642.58

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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.