Home / 20,661.48-30,984.24-8,807.76

Finding the Fourth Proportional to 20,661.48, 30,984.24 and 8,807.76

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Solution

The fourth proportional to 20,661.48, 30,984.24 and 8,807.76 is: 13,208.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.48 : 30,984.24 = 8,807.76 : x
  2. Step 2: Convert to fraction form
    20,661.48/30,984.24 = 8,807.76/x
  3. Step 3: Cross multiply
    20,661.48x = 30,984.24 × 8,807.76
  4. Step 4: Simplify right side
    20,661.48x = 272,901,749.70
  5. Step 5: Solve for x
    x = 272,901,749.70/20,661.48
  6. Step 6: Final answer
    x = 13,208.24

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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.