Home / 20,140.93-30,180.35-10,782.19

Finding the Fourth Proportional to 20,140.93, 30,180.35 and 10,782.19

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Solution

The fourth proportional to 20,140.93, 30,180.35 and 10,782.19 is: 16,156.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.93 : 30,180.35 = 10,782.19 : x
  2. Step 2: Convert to fraction form
    20,140.93/30,180.35 = 10,782.19/x
  3. Step 3: Cross multiply
    20,140.93x = 30,180.35 × 10,782.19
  4. Step 4: Simplify right side
    20,140.93x = 325,410,214.06
  5. Step 5: Solve for x
    x = 325,410,214.06/20,140.93
  6. Step 6: Final answer
    x = 16,156.66

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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.