Home / 13,119.10-19,678.79-10,503.23

Finding the Fourth Proportional to 13,119.10, 19,678.79 and 10,503.23

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Solution

The fourth proportional to 13,119.10, 19,678.79 and 10,503.23 is: 15,754.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.10 : 19,678.79 = 10,503.23 : x
  2. Step 2: Convert to fraction form
    13,119.10/19,678.79 = 10,503.23/x
  3. Step 3: Cross multiply
    13,119.10x = 19,678.79 × 10,503.23
  4. Step 4: Simplify right side
    13,119.10x = 206,690,857.49
  5. Step 5: Solve for x
    x = 206,690,857.49/13,119.10
  6. Step 6: Final answer
    x = 15,754.96

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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.