Home / 28,289.12-39,022.29-17,660.30

Finding the Fourth Proportional to 28,289.12, 39,022.29 and 17,660.30

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Solution

The fourth proportional to 28,289.12, 39,022.29 and 17,660.30 is: 24,360.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.12 : 39,022.29 = 17,660.30 : x
  2. Step 2: Convert to fraction form
    28,289.12/39,022.29 = 17,660.30/x
  3. Step 3: Cross multiply
    28,289.12x = 39,022.29 × 17,660.30
  4. Step 4: Simplify right side
    28,289.12x = 689,145,152.98
  5. Step 5: Solve for x
    x = 689,145,152.98/28,289.12
  6. Step 6: Final answer
    x = 24,360.79

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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.