Home / 20,228.10-27,914.13-12,678.50

Finding the Fourth Proportional to 20,228.10, 27,914.13 and 12,678.50

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Solution

The fourth proportional to 20,228.10, 27,914.13 and 12,678.50 is: 17,495.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.10 : 27,914.13 = 12,678.50 : x
  2. Step 2: Convert to fraction form
    20,228.10/27,914.13 = 12,678.50/x
  3. Step 3: Cross multiply
    20,228.10x = 27,914.13 × 12,678.50
  4. Step 4: Simplify right side
    20,228.10x = 353,909,297.21
  5. Step 5: Solve for x
    x = 353,909,297.21/20,228.10
  6. Step 6: Final answer
    x = 17,495.92

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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.