Home / 13,121-19,580.73-11,719.72

Finding the Fourth Proportional to 13,121, 19,580.73 and 11,719.72

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Solution

The fourth proportional to 13,121, 19,580.73 and 11,719.72 is: 17,489.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121 : 19,580.73 = 11,719.72 : x
  2. Step 2: Convert to fraction form
    13,121/19,580.73 = 11,719.72/x
  3. Step 3: Cross multiply
    13,121x = 19,580.73 × 11,719.72
  4. Step 4: Simplify right side
    13,121x = 229,480,673.00
  5. Step 5: Solve for x
    x = 229,480,673.00/13,121
  6. Step 6: Final answer
    x = 17,489.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.