Home / 18,453.36-25,457.88-12,867.60

Finding the Fourth Proportional to 18,453.36, 25,457.88 and 12,867.60

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Solution

The fourth proportional to 18,453.36, 25,457.88 and 12,867.60 is: 17,751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.36 : 25,457.88 = 12,867.60 : x
  2. Step 2: Convert to fraction form
    18,453.36/25,457.88 = 12,867.60/x
  3. Step 3: Cross multiply
    18,453.36x = 25,457.88 × 12,867.60
  4. Step 4: Simplify right side
    18,453.36x = 327,581,816.69
  5. Step 5: Solve for x
    x = 327,581,816.69/18,453.36
  6. Step 6: Final answer
    x = 17,751.88

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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.