Home / 19,359.40-29,039.10-13,138.60

Finding the Fourth Proportional to 19,359.40, 29,039.10 and 13,138.60

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Solution

The fourth proportional to 19,359.40, 29,039.10 and 13,138.60 is: 19,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.40 : 29,039.10 = 13,138.60 : x
  2. Step 2: Convert to fraction form
    19,359.40/29,039.10 = 13,138.60/x
  3. Step 3: Cross multiply
    19,359.40x = 29,039.10 × 13,138.60
  4. Step 4: Simplify right side
    19,359.40x = 381,533,119.26
  5. Step 5: Solve for x
    x = 381,533,119.26/19,359.40
  6. Step 6: Final answer
    x = 19,707.90

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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.