Home / 28,340.40-39,107.16-17,009.76

Finding the Fourth Proportional to 28,340.40, 39,107.16 and 17,009.76

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Solution

The fourth proportional to 28,340.40, 39,107.16 and 17,009.76 is: 23,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340.40 : 39,107.16 = 17,009.76 : x
  2. Step 2: Convert to fraction form
    28,340.40/39,107.16 = 17,009.76/x
  3. Step 3: Cross multiply
    28,340.40x = 39,107.16 × 17,009.76
  4. Step 4: Simplify right side
    28,340.40x = 665,203,405.88
  5. Step 5: Solve for x
    x = 665,203,405.88/28,340.40
  6. Step 6: Final answer
    x = 23,471.91

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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.