Home / 20,118.39-27,756.95-11,619.39

Finding the Fourth Proportional to 20,118.39, 27,756.95 and 11,619.39

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Solution

The fourth proportional to 20,118.39, 27,756.95 and 11,619.39 is: 16,031.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.39 : 27,756.95 = 11,619.39 : x
  2. Step 2: Convert to fraction form
    20,118.39/27,756.95 = 11,619.39/x
  3. Step 3: Cross multiply
    20,118.39x = 27,756.95 × 11,619.39
  4. Step 4: Simplify right side
    20,118.39x = 322,518,893.22
  5. Step 5: Solve for x
    x = 322,518,893.22/20,118.39
  6. Step 6: Final answer
    x = 16,031.05

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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.