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Finding the Fourth Proportional to 19,166.51, 28,749.76 and 8,624.21

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Solution

The fourth proportional to 19,166.51, 28,749.76 and 8,624.21 is: 12,936.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,166.51 : 28,749.76 = 8,624.21 : x
  2. Step 2: Convert to fraction form
    19,166.51/28,749.76 = 8,624.21/x
  3. Step 3: Cross multiply
    19,166.51x = 28,749.76 × 8,624.21
  4. Step 4: Simplify right side
    19,166.51x = 247,943,967.69
  5. Step 5: Solve for x
    x = 247,943,967.69/19,166.51
  6. Step 6: Final answer
    x = 12,936.31

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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.