Home / 13,571.68-18,696.48-12,904.60

Finding the Fourth Proportional to 13,571.68, 18,696.48 and 12,904.60

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Solution

The fourth proportional to 13,571.68, 18,696.48 and 12,904.60 is: 17,777.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.68 : 18,696.48 = 12,904.60 : x
  2. Step 2: Convert to fraction form
    13,571.68/18,696.48 = 12,904.60/x
  3. Step 3: Cross multiply
    13,571.68x = 18,696.48 × 12,904.60
  4. Step 4: Simplify right side
    13,571.68x = 241,270,595.81
  5. Step 5: Solve for x
    x = 241,270,595.81/13,571.68
  6. Step 6: Final answer
    x = 17,777.50

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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.