Home / 27,813.87-38,383.07-15,880.95

Finding the Fourth Proportional to 27,813.87, 38,383.07 and 15,880.95

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Solution

The fourth proportional to 27,813.87, 38,383.07 and 15,880.95 is: 21,915.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,813.87 : 38,383.07 = 15,880.95 : x
  2. Step 2: Convert to fraction form
    27,813.87/38,383.07 = 15,880.95/x
  3. Step 3: Cross multiply
    27,813.87x = 38,383.07 × 15,880.95
  4. Step 4: Simplify right side
    27,813.87x = 609,559,536.11
  5. Step 5: Solve for x
    x = 609,559,536.11/27,813.87
  6. Step 6: Final answer
    x = 21,915.67

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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.