Home / 28,525.85-39,364.08-15,778.31

Finding the Fourth Proportional to 28,525.85, 39,364.08 and 15,778.31

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Solution

The fourth proportional to 28,525.85, 39,364.08 and 15,778.31 is: 21,773.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,525.85 : 39,364.08 = 15,778.31 : x
  2. Step 2: Convert to fraction form
    28,525.85/39,364.08 = 15,778.31/x
  3. Step 3: Cross multiply
    28,525.85x = 39,364.08 × 15,778.31
  4. Step 4: Simplify right side
    28,525.85x = 621,098,657.10
  5. Step 5: Solve for x
    x = 621,098,657.10/28,525.85
  6. Step 6: Final answer
    x = 21,773.19

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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.