Home / 20,009.56-30,014.34-5,218.45

Finding the Fourth Proportional to 20,009.56, 30,014.34 and 5,218.45

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Solution

The fourth proportional to 20,009.56, 30,014.34 and 5,218.45 is: 7,827.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.56 : 30,014.34 = 5,218.45 : x
  2. Step 2: Convert to fraction form
    20,009.56/30,014.34 = 5,218.45/x
  3. Step 3: Cross multiply
    20,009.56x = 30,014.34 × 5,218.45
  4. Step 4: Simplify right side
    20,009.56x = 156,628,332.57
  5. Step 5: Solve for x
    x = 156,628,332.57/20,009.56
  6. Step 6: Final answer
    x = 7,827.68

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Double scale
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Similar ratio
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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.