Home / 20,103.77-30,159.03-8,417.90

Finding the Fourth Proportional to 20,103.77, 30,159.03 and 8,417.90

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Solution

The fourth proportional to 20,103.77, 30,159.03 and 8,417.90 is: 12,628.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.77 : 30,159.03 = 8,417.90 : x
  2. Step 2: Convert to fraction form
    20,103.77/30,159.03 = 8,417.90/x
  3. Step 3: Cross multiply
    20,103.77x = 30,159.03 × 8,417.90
  4. Step 4: Simplify right side
    20,103.77x = 253,875,698.64
  5. Step 5: Solve for x
    x = 253,875,698.64/20,103.77
  6. Step 6: Final answer
    x = 12,628.26

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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.