Home / 28,421.36-39,246.24-17,829.20

Finding the Fourth Proportional to 28,421.36, 39,246.24 and 17,829.20

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Solution

The fourth proportional to 28,421.36, 39,246.24 and 17,829.20 is: 24,619.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.36 : 39,246.24 = 17,829.20 : x
  2. Step 2: Convert to fraction form
    28,421.36/39,246.24 = 17,829.20/x
  3. Step 3: Cross multiply
    28,421.36x = 39,246.24 × 17,829.20
  4. Step 4: Simplify right side
    28,421.36x = 699,729,062.21
  5. Step 5: Solve for x
    x = 699,729,062.21/28,421.36
  6. Step 6: Final answer
    x = 24,619.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.