Home / 20,490.77-30,730.59-8,801.26

Finding the Fourth Proportional to 20,490.77, 30,730.59 and 8,801.26

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Solution

The fourth proportional to 20,490.77, 30,730.59 and 8,801.26 is: 13,199.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.77 : 30,730.59 = 8,801.26 : x
  2. Step 2: Convert to fraction form
    20,490.77/30,730.59 = 8,801.26/x
  3. Step 3: Cross multiply
    20,490.77x = 30,730.59 × 8,801.26
  4. Step 4: Simplify right side
    20,490.77x = 270,467,835.72
  5. Step 5: Solve for x
    x = 270,467,835.72/20,490.77
  6. Step 6: Final answer
    x = 13,199.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.