Home / 13,019.40-19,529.10-10,103.40

Finding the Fourth Proportional to 13,019.40, 19,529.10 and 10,103.40

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Solution

The fourth proportional to 13,019.40, 19,529.10 and 10,103.40 is: 15,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.40 : 19,529.10 = 10,103.40 : x
  2. Step 2: Convert to fraction form
    13,019.40/19,529.10 = 10,103.40/x
  3. Step 3: Cross multiply
    13,019.40x = 19,529.10 × 10,103.40
  4. Step 4: Simplify right side
    13,019.40x = 197,310,308.94
  5. Step 5: Solve for x
    x = 197,310,308.94/13,019.40
  6. Step 6: Final answer
    x = 15,155.10

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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.