Home / 27,100.22-37,411.08-20,388.40

Finding the Fourth Proportional to 27,100.22, 37,411.08 and 20,388.40

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Solution

The fourth proportional to 27,100.22, 37,411.08 and 20,388.40 is: 28,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,100.22 : 37,411.08 = 20,388.40 : x
  2. Step 2: Convert to fraction form
    27,100.22/37,411.08 = 20,388.40/x
  3. Step 3: Cross multiply
    27,100.22x = 37,411.08 × 20,388.40
  4. Step 4: Simplify right side
    27,100.22x = 762,752,063.47
  5. Step 5: Solve for x
    x = 762,752,063.47/27,100.22
  6. Step 6: Final answer
    x = 28,145.60

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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.