Home / 28,535.40-39,379.62-15,959.40

Finding the Fourth Proportional to 28,535.40, 39,379.62 and 15,959.40

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Solution

The fourth proportional to 28,535.40, 39,379.62 and 15,959.40 is: 22,024.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.40 : 39,379.62 = 15,959.40 : x
  2. Step 2: Convert to fraction form
    28,535.40/39,379.62 = 15,959.40/x
  3. Step 3: Cross multiply
    28,535.40x = 39,379.62 × 15,959.40
  4. Step 4: Simplify right side
    28,535.40x = 628,475,107.43
  5. Step 5: Solve for x
    x = 628,475,107.43/28,535.40
  6. Step 6: Final answer
    x = 22,024.40

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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.