Home / 20,111.08-27,688.58-17,272.84

Finding the Fourth Proportional to 20,111.08, 27,688.58 and 17,272.84

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Solution

The fourth proportional to 20,111.08, 27,688.58 and 17,272.84 is: 23,780.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.08 : 27,688.58 = 17,272.84 : x
  2. Step 2: Convert to fraction form
    20,111.08/27,688.58 = 17,272.84/x
  3. Step 3: Cross multiply
    20,111.08x = 27,688.58 × 17,272.84
  4. Step 4: Simplify right side
    20,111.08x = 478,260,412.17
  5. Step 5: Solve for x
    x = 478,260,412.17/20,111.08
  6. Step 6: Final answer
    x = 23,780.94

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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.