Home / 13,135.80-19,703.70-9,449.40

Finding the Fourth Proportional to 13,135.80, 19,703.70 and 9,449.40

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Solution

The fourth proportional to 13,135.80, 19,703.70 and 9,449.40 is: 14,174.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.80 : 19,703.70 = 9,449.40 : x
  2. Step 2: Convert to fraction form
    13,135.80/19,703.70 = 9,449.40/x
  3. Step 3: Cross multiply
    13,135.80x = 19,703.70 × 9,449.40
  4. Step 4: Simplify right side
    13,135.80x = 186,188,142.78
  5. Step 5: Solve for x
    x = 186,188,142.78/13,135.80
  6. Step 6: Final answer
    x = 14,174.10

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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.