Home / 8,643.32-11,921.20-7,450.36

Finding the Fourth Proportional to 8,643.32, 11,921.20 and 7,450.36

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Solution

The fourth proportional to 8,643.32, 11,921.20 and 7,450.36 is: 10,275.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.32 : 11,921.20 = 7,450.36 : x
  2. Step 2: Convert to fraction form
    8,643.32/11,921.20 = 7,450.36/x
  3. Step 3: Cross multiply
    8,643.32x = 11,921.20 × 7,450.36
  4. Step 4: Simplify right side
    8,643.32x = 88,817,231.63
  5. Step 5: Solve for x
    x = 88,817,231.63/8,643.32
  6. Step 6: Final answer
    x = 10,275.82

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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.