Home / 28,165.24-38,826.63-21,439.15

Finding the Fourth Proportional to 28,165.24, 38,826.63 and 21,439.15

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Solution

The fourth proportional to 28,165.24, 38,826.63 and 21,439.15 is: 29,554.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,165.24 : 38,826.63 = 21,439.15 : x
  2. Step 2: Convert to fraction form
    28,165.24/38,826.63 = 21,439.15/x
  3. Step 3: Cross multiply
    28,165.24x = 38,826.63 × 21,439.15
  4. Step 4: Simplify right side
    28,165.24x = 832,409,944.56
  5. Step 5: Solve for x
    x = 832,409,944.56/28,165.24
  6. Step 6: Final answer
    x = 29,554.51

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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.