Home / 13,019.88-19,507.14-10,438.68

Finding the Fourth Proportional to 13,019.88, 19,507.14 and 10,438.68

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Solution

The fourth proportional to 13,019.88, 19,507.14 and 10,438.68 is: 15,639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.88 : 19,507.14 = 10,438.68 : x
  2. Step 2: Convert to fraction form
    13,019.88/19,507.14 = 10,438.68/x
  3. Step 3: Cross multiply
    13,019.88x = 19,507.14 × 10,438.68
  4. Step 4: Simplify right side
    13,019.88x = 203,628,792.18
  5. Step 5: Solve for x
    x = 203,628,792.18/13,019.88
  6. Step 6: Final answer
    x = 15,639.84

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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.