Home / 18,936.32-28,409.63-5,788.40

Finding the Fourth Proportional to 18,936.32, 28,409.63 and 5,788.40

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Solution

The fourth proportional to 18,936.32, 28,409.63 and 5,788.40 is: 8,684.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.32 : 28,409.63 = 5,788.40 : x
  2. Step 2: Convert to fraction form
    18,936.32/28,409.63 = 5,788.40/x
  3. Step 3: Cross multiply
    18,936.32x = 28,409.63 × 5,788.40
  4. Step 4: Simplify right side
    18,936.32x = 164,446,131.30
  5. Step 5: Solve for x
    x = 164,446,131.30/18,936.32
  6. Step 6: Final answer
    x = 8,684.17

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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.