Home / 28,419.93-39,217.37-15,842.25

Finding the Fourth Proportional to 28,419.93, 39,217.37 and 15,842.25

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Solution

The fourth proportional to 28,419.93, 39,217.37 and 15,842.25 is: 21,861.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,419.93 : 39,217.37 = 15,842.25 : x
  2. Step 2: Convert to fraction form
    28,419.93/39,217.37 = 15,842.25/x
  3. Step 3: Cross multiply
    28,419.93x = 39,217.37 × 15,842.25
  4. Step 4: Simplify right side
    28,419.93x = 621,291,300.67
  5. Step 5: Solve for x
    x = 621,291,300.67/28,419.93
  6. Step 6: Final answer
    x = 21,861.11

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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.