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Finding the Fourth Proportional to 13,698.30, 19,216.50 and 13,698.30

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Solution

The fourth proportional to 13,698.30, 19,216.50 and 13,698.30 is: 19,216.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.30 : 19,216.50 = 13,698.30 : x
  2. Step 2: Convert to fraction form
    13,698.30/19,216.50 = 13,698.30/x
  3. Step 3: Cross multiply
    13,698.30x = 19,216.50 × 13,698.30
  4. Step 4: Simplify right side
    13,698.30x = 263,233,381.95
  5. Step 5: Solve for x
    x = 263,233,381.95/13,698.30
  6. Step 6: Final answer
    x = 19,216.50

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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.