Home / 18,345.40-25,323.78-12,059.80

Finding the Fourth Proportional to 18,345.40, 25,323.78 and 12,059.80

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Solution

The fourth proportional to 18,345.40, 25,323.78 and 12,059.80 is: 16,647.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.40 : 25,323.78 = 12,059.80 : x
  2. Step 2: Convert to fraction form
    18,345.40/25,323.78 = 12,059.80/x
  3. Step 3: Cross multiply
    18,345.40x = 25,323.78 × 12,059.80
  4. Step 4: Simplify right side
    18,345.40x = 305,399,722.04
  5. Step 5: Solve for x
    x = 305,399,722.04/18,345.40
  6. Step 6: Final answer
    x = 16,647.21

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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.