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Finding the Fourth Proportional to 13,309.95, 19,964.93 and 6,287.66

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Solution

The fourth proportional to 13,309.95, 19,964.93 and 6,287.66 is: 9,431.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.95 : 19,964.93 = 6,287.66 : x
  2. Step 2: Convert to fraction form
    13,309.95/19,964.93 = 6,287.66/x
  3. Step 3: Cross multiply
    13,309.95x = 19,964.93 × 6,287.66
  4. Step 4: Simplify right side
    13,309.95x = 125,532,560.50
  5. Step 5: Solve for x
    x = 125,532,560.50/13,309.95
  6. Step 6: Final answer
    x = 9,431.48

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1.5x scale

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.