Home / 20,148.58-30,222.81-5,357.49

Finding the Fourth Proportional to 20,148.58, 30,222.81 and 5,357.49

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Solution

The fourth proportional to 20,148.58, 30,222.81 and 5,357.49 is: 8,036.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.58 : 30,222.81 = 5,357.49 : x
  2. Step 2: Convert to fraction form
    20,148.58/30,222.81 = 5,357.49/x
  3. Step 3: Cross multiply
    20,148.58x = 30,222.81 × 5,357.49
  4. Step 4: Simplify right side
    20,148.58x = 161,918,251.23
  5. Step 5: Solve for x
    x = 161,918,251.23/20,148.58
  6. Step 6: Final answer
    x = 8,036.21

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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.