Home / 13,851.48-20,776.54-5,085.73

Finding the Fourth Proportional to 13,851.48, 20,776.54 and 5,085.73

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Solution

The fourth proportional to 13,851.48, 20,776.54 and 5,085.73 is: 7,628.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.48 : 20,776.54 = 5,085.73 : x
  2. Step 2: Convert to fraction form
    13,851.48/20,776.54 = 5,085.73/x
  3. Step 3: Cross multiply
    13,851.48x = 20,776.54 × 5,085.73
  4. Step 4: Simplify right side
    13,851.48x = 105,663,872.77
  5. Step 5: Solve for x
    x = 105,663,872.77/13,851.48
  6. Step 6: Final answer
    x = 7,628.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.