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Finding the Fourth Proportional to 14,015.70, 19,680.30 and 14,015.70

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Solution

The fourth proportional to 14,015.70, 19,680.30 and 14,015.70 is: 19,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,015.70 : 19,680.30 = 14,015.70 : x
  2. Step 2: Convert to fraction form
    14,015.70/19,680.30 = 14,015.70/x
  3. Step 3: Cross multiply
    14,015.70x = 19,680.30 × 14,015.70
  4. Step 4: Simplify right side
    14,015.70x = 275,833,180.71
  5. Step 5: Solve for x
    x = 275,833,180.71/14,015.70
  6. Step 6: Final answer
    x = 19,680.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.