Home / 18,360.30-25,323.12-12,382.50

Finding the Fourth Proportional to 18,360.30, 25,323.12 and 12,382.50

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Solution

The fourth proportional to 18,360.30, 25,323.12 and 12,382.50 is: 17,078.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.30 : 25,323.12 = 12,382.50 : x
  2. Step 2: Convert to fraction form
    18,360.30/25,323.12 = 12,382.50/x
  3. Step 3: Cross multiply
    18,360.30x = 25,323.12 × 12,382.50
  4. Step 4: Simplify right side
    18,360.30x = 313,563,533.40
  5. Step 5: Solve for x
    x = 313,563,533.40/18,360.30
  6. Step 6: Final answer
    x = 17,078.34

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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.