Home / 28,526.12-39,364.42-15,778.56

Finding the Fourth Proportional to 28,526.12, 39,364.42 and 15,778.56

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Solution

The fourth proportional to 28,526.12, 39,364.42 and 15,778.56 is: 21,773.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,526.12 : 39,364.42 = 15,778.56 : x
  2. Step 2: Convert to fraction form
    28,526.12/39,364.42 = 15,778.56/x
  3. Step 3: Cross multiply
    28,526.12x = 39,364.42 × 15,778.56
  4. Step 4: Simplify right side
    28,526.12x = 621,113,862.84
  5. Step 5: Solve for x
    x = 621,113,862.84/28,526.12
  6. Step 6: Final answer
    x = 21,773.51

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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.