Home / 20,246.34-27,938.88-12,693

Finding the Fourth Proportional to 20,246.34, 27,938.88 and 12,693

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Solution

The fourth proportional to 20,246.34, 27,938.88 and 12,693 is: 17,515.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.34 : 27,938.88 = 12,693 : x
  2. Step 2: Convert to fraction form
    20,246.34/27,938.88 = 12,693/x
  3. Step 3: Cross multiply
    20,246.34x = 27,938.88 × 12,693
  4. Step 4: Simplify right side
    20,246.34x = 354,628,203.84
  5. Step 5: Solve for x
    x = 354,628,203.84/20,246.34
  6. Step 6: Final answer
    x = 17,515.67

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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.