Home / 13,457.75-20,190.74-6,888.59

Finding the Fourth Proportional to 13,457.75, 20,190.74 and 6,888.59

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Solution

The fourth proportional to 13,457.75, 20,190.74 and 6,888.59 is: 10,334.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.75 : 20,190.74 = 6,888.59 : x
  2. Step 2: Convert to fraction form
    13,457.75/20,190.74 = 6,888.59/x
  3. Step 3: Cross multiply
    13,457.75x = 20,190.74 × 6,888.59
  4. Step 4: Simplify right side
    13,457.75x = 139,085,729.66
  5. Step 5: Solve for x
    x = 139,085,729.66/13,457.75
  6. Step 6: Final answer
    x = 10,334.99

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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.