Home / 19,116-28,618.38-14,207.40

Finding the Fourth Proportional to 19,116, 28,618.38 and 14,207.40

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Solution

The fourth proportional to 19,116, 28,618.38 and 14,207.40 is: 21,269.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,116 : 28,618.38 = 14,207.40 : x
  2. Step 2: Convert to fraction form
    19,116/28,618.38 = 14,207.40/x
  3. Step 3: Cross multiply
    19,116x = 28,618.38 × 14,207.40
  4. Step 4: Simplify right side
    19,116x = 406,592,772.01
  5. Step 5: Solve for x
    x = 406,592,772.01/19,116
  6. Step 6: Final answer
    x = 21,269.76

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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.