Home / 13,889.19-19,167.04-7,515.81

Finding the Fourth Proportional to 13,889.19, 19,167.04 and 7,515.81

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Solution

The fourth proportional to 13,889.19, 19,167.04 and 7,515.81 is: 10,371.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.19 : 19,167.04 = 7,515.81 : x
  2. Step 2: Convert to fraction form
    13,889.19/19,167.04 = 7,515.81/x
  3. Step 3: Cross multiply
    13,889.19x = 19,167.04 × 7,515.81
  4. Step 4: Simplify right side
    13,889.19x = 144,055,830.90
  5. Step 5: Solve for x
    x = 144,055,830.90/13,889.19
  6. Step 6: Final answer
    x = 10,371.79

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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.