Home / 12,288.51-18,409.64-7,276.05

Finding the Fourth Proportional to 12,288.51, 18,409.64 and 7,276.05

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Solution

The fourth proportional to 12,288.51, 18,409.64 and 7,276.05 is: 10,900.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288.51 : 18,409.64 = 7,276.05 : x
  2. Step 2: Convert to fraction form
    12,288.51/18,409.64 = 7,276.05/x
  3. Step 3: Cross multiply
    12,288.51x = 18,409.64 × 7,276.05
  4. Step 4: Simplify right side
    12,288.51x = 133,949,424.74
  5. Step 5: Solve for x
    x = 133,949,424.74/12,288.51
  6. Step 6: Final answer
    x = 10,900.38

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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.