Home / 28,525.12-39,363.04-15,777.56

Finding the Fourth Proportional to 28,525.12, 39,363.04 and 15,777.56

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Solution

The fourth proportional to 28,525.12, 39,363.04 and 15,777.56 is: 21,772.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,525.12 : 39,363.04 = 15,777.56 : x
  2. Step 2: Convert to fraction form
    28,525.12/39,363.04 = 15,777.56/x
  3. Step 3: Cross multiply
    28,525.12x = 39,363.04 × 15,777.56
  4. Step 4: Simplify right side
    28,525.12x = 621,052,725.38
  5. Step 5: Solve for x
    x = 621,052,725.38/28,525.12
  6. Step 6: Final answer
    x = 21,772.13

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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.