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Finding the Fourth Proportional to 14,218.96, 19,624.52 and 8,918.32

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Solution

The fourth proportional to 14,218.96, 19,624.52 and 8,918.32 is: 12,308.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.96 : 19,624.52 = 8,918.32 : x
  2. Step 2: Convert to fraction form
    14,218.96/19,624.52 = 8,918.32/x
  3. Step 3: Cross multiply
    14,218.96x = 19,624.52 × 8,918.32
  4. Step 4: Simplify right side
    14,218.96x = 175,017,749.21
  5. Step 5: Solve for x
    x = 175,017,749.21/14,218.96
  6. Step 6: Final answer
    x = 12,308.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.