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Finding the Fourth Proportional to 28,732.99, 43,099.45 and 9,013.07

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Solution

The fourth proportional to 28,732.99, 43,099.45 and 9,013.07 is: 13,519.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,732.99 : 43,099.45 = 9,013.07 : x
  2. Step 2: Convert to fraction form
    28,732.99/43,099.45 = 9,013.07/x
  3. Step 3: Cross multiply
    28,732.99x = 43,099.45 × 9,013.07
  4. Step 4: Simplify right side
    28,732.99x = 388,458,359.81
  5. Step 5: Solve for x
    x = 388,458,359.81/28,732.99
  6. Step 6: Final answer
    x = 13,519.59

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Half scale
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Double scale
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Similar ratio
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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.