Home / 20,140.48-30,211.08-6,993.28

Finding the Fourth Proportional to 20,140.48, 30,211.08 and 6,993.28

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Solution

The fourth proportional to 20,140.48, 30,211.08 and 6,993.28 is: 10,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.48 : 30,211.08 = 6,993.28 : x
  2. Step 2: Convert to fraction form
    20,140.48/30,211.08 = 6,993.28/x
  3. Step 3: Cross multiply
    20,140.48x = 30,211.08 × 6,993.28
  4. Step 4: Simplify right side
    20,140.48x = 211,274,541.54
  5. Step 5: Solve for x
    x = 211,274,541.54/20,140.48
  6. Step 6: Final answer
    x = 10,490.05

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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.