Home / 20,117.58-30,357.29-19,422.60

Finding the Fourth Proportional to 20,117.58, 30,357.29 and 19,422.60

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Solution

The fourth proportional to 20,117.58, 30,357.29 and 19,422.60 is: 29,308.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.58 : 30,357.29 = 19,422.60 : x
  2. Step 2: Convert to fraction form
    20,117.58/30,357.29 = 19,422.60/x
  3. Step 3: Cross multiply
    20,117.58x = 30,357.29 × 19,422.60
  4. Step 4: Simplify right side
    20,117.58x = 589,617,403.64
  5. Step 5: Solve for x
    x = 589,617,403.64/20,117.58
  6. Step 6: Final answer
    x = 29,308.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.