Home / 28,682.87-39,581.78-15,935.99

Finding the Fourth Proportional to 28,682.87, 39,581.78 and 15,935.99

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Solution

The fourth proportional to 28,682.87, 39,581.78 and 15,935.99 is: 21,991.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682.87 : 39,581.78 = 15,935.99 : x
  2. Step 2: Convert to fraction form
    28,682.87/39,581.78 = 15,935.99/x
  3. Step 3: Cross multiply
    28,682.87x = 39,581.78 × 15,935.99
  4. Step 4: Simplify right side
    28,682.87x = 630,774,572.67
  5. Step 5: Solve for x
    x = 630,774,572.67/28,682.87
  6. Step 6: Final answer
    x = 21,991.34

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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.