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Finding the Fourth Proportional to 28,866.99, 43,301.69 and 9,145.11

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Solution

The fourth proportional to 28,866.99, 43,301.69 and 9,145.11 is: 13,718.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,866.99 : 43,301.69 = 9,145.11 : x
  2. Step 2: Convert to fraction form
    28,866.99/43,301.69 = 9,145.11/x
  3. Step 3: Cross multiply
    28,866.99x = 43,301.69 × 9,145.11
  4. Step 4: Simplify right side
    28,866.99x = 395,998,718.24
  5. Step 5: Solve for x
    x = 395,998,718.24/28,866.99
  6. Step 6: Final answer
    x = 13,718.05

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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.