Home / 10,119.80-15,179.70-9,682.40

Finding the Fourth Proportional to 10,119.80, 15,179.70 and 9,682.40

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Solution

The fourth proportional to 10,119.80, 15,179.70 and 9,682.40 is: 14,523.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.80 : 15,179.70 = 9,682.40 : x
  2. Step 2: Convert to fraction form
    10,119.80/15,179.70 = 9,682.40/x
  3. Step 3: Cross multiply
    10,119.80x = 15,179.70 × 9,682.40
  4. Step 4: Simplify right side
    10,119.80x = 146,975,927.28
  5. Step 5: Solve for x
    x = 146,975,927.28/10,119.80
  6. Step 6: Final answer
    x = 14,523.60

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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.