Home / 28,235.33-38,981.64-17,639.31

Finding the Fourth Proportional to 28,235.33, 38,981.64 and 17,639.31

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Solution

The fourth proportional to 28,235.33, 38,981.64 and 17,639.31 is: 24,352.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.33 : 38,981.64 = 17,639.31 : x
  2. Step 2: Convert to fraction form
    28,235.33/38,981.64 = 17,639.31/x
  3. Step 3: Cross multiply
    28,235.33x = 38,981.64 × 17,639.31
  4. Step 4: Simplify right side
    28,235.33x = 687,609,232.27
  5. Step 5: Solve for x
    x = 687,609,232.27/28,235.33
  6. Step 6: Final answer
    x = 24,352.80

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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.