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Finding the Fourth Proportional to 14,069, 19,415.68 and 7,782.60

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Solution

The fourth proportional to 14,069, 19,415.68 and 7,782.60 is: 10,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,069 : 19,415.68 = 7,782.60 : x
  2. Step 2: Convert to fraction form
    14,069/19,415.68 = 7,782.60/x
  3. Step 3: Cross multiply
    14,069x = 19,415.68 × 7,782.60
  4. Step 4: Simplify right side
    14,069x = 151,104,471.17
  5. Step 5: Solve for x
    x = 151,104,471.17/14,069
  6. Step 6: Final answer
    x = 10,740.24

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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.