Home / 20,148.40-30,222.60-7,665.52

Finding the Fourth Proportional to 20,148.40, 30,222.60 and 7,665.52

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Solution

The fourth proportional to 20,148.40, 30,222.60 and 7,665.52 is: 11,498.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.40 : 30,222.60 = 7,665.52 : x
  2. Step 2: Convert to fraction form
    20,148.40/30,222.60 = 7,665.52/x
  3. Step 3: Cross multiply
    20,148.40x = 30,222.60 × 7,665.52
  4. Step 4: Simplify right side
    20,148.40x = 231,671,944.75
  5. Step 5: Solve for x
    x = 231,671,944.75/20,148.40
  6. Step 6: Final answer
    x = 11,498.28

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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.