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Finding the Fourth Proportional to 9,950.64, 13,729.10 and 6,415.92

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Solution

The fourth proportional to 9,950.64, 13,729.10 and 6,415.92 is: 8,852.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,950.64 : 13,729.10 = 6,415.92 : x
  2. Step 2: Convert to fraction form
    9,950.64/13,729.10 = 6,415.92/x
  3. Step 3: Cross multiply
    9,950.64x = 13,729.10 × 6,415.92
  4. Step 4: Simplify right side
    9,950.64x = 88,084,775.19
  5. Step 5: Solve for x
    x = 88,084,775.19/9,950.64
  6. Step 6: Final answer
    x = 8,852.17

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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.