Home / 13,140.36-19,665.72-10,231.92

Finding the Fourth Proportional to 13,140.36, 19,665.72 and 10,231.92

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Solution

The fourth proportional to 13,140.36, 19,665.72 and 10,231.92 is: 15,312.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.36 : 19,665.72 = 10,231.92 : x
  2. Step 2: Convert to fraction form
    13,140.36/19,665.72 = 10,231.92/x
  3. Step 3: Cross multiply
    13,140.36x = 19,665.72 × 10,231.92
  4. Step 4: Simplify right side
    13,140.36x = 201,218,073.78
  5. Step 5: Solve for x
    x = 201,218,073.78/13,140.36
  6. Step 6: Final answer
    x = 15,312.98

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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.