Home / 28,490.46-39,290.82-21,763.58

Finding the Fourth Proportional to 28,490.46, 39,290.82 and 21,763.58

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Solution

The fourth proportional to 28,490.46, 39,290.82 and 21,763.58 is: 30,013.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.46 : 39,290.82 = 21,763.58 : x
  2. Step 2: Convert to fraction form
    28,490.46/39,290.82 = 21,763.58/x
  3. Step 3: Cross multiply
    28,490.46x = 39,290.82 × 21,763.58
  4. Step 4: Simplify right side
    28,490.46x = 855,108,904.34
  5. Step 5: Solve for x
    x = 855,108,904.34/28,490.46
  6. Step 6: Final answer
    x = 30,013.87

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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.