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Finding the Fourth Proportional to 28,984.86, 43,491.87 and 21,604.14

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Solution

The fourth proportional to 28,984.86, 43,491.87 and 21,604.14 is: 32,417.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,984.86 : 43,491.87 = 21,604.14 : x
  2. Step 2: Convert to fraction form
    28,984.86/43,491.87 = 21,604.14/x
  3. Step 3: Cross multiply
    28,984.86x = 43,491.87 × 21,604.14
  4. Step 4: Simplify right side
    28,984.86x = 939,604,448.34
  5. Step 5: Solve for x
    x = 939,604,448.34/28,984.86
  6. Step 6: Final answer
    x = 32,417.08

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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.