Home / 28,559.68-39,406.86-18,486.72

Finding the Fourth Proportional to 28,559.68, 39,406.86 and 18,486.72

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Solution

The fourth proportional to 28,559.68, 39,406.86 and 18,486.72 is: 25,508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.68 : 39,406.86 = 18,486.72 : x
  2. Step 2: Convert to fraction form
    28,559.68/39,406.86 = 18,486.72/x
  3. Step 3: Cross multiply
    28,559.68x = 39,406.86 × 18,486.72
  4. Step 4: Simplify right side
    28,559.68x = 728,503,586.90
  5. Step 5: Solve for x
    x = 728,503,586.90/28,559.68
  6. Step 6: Final answer
    x = 25,508.12

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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.