Home / 13,648.30-20,470.16-3,788.58

Finding the Fourth Proportional to 13,648.30, 20,470.16 and 3,788.58

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Solution

The fourth proportional to 13,648.30, 20,470.16 and 3,788.58 is: 5,682.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,648.30 : 20,470.16 = 3,788.58 : x
  2. Step 2: Convert to fraction form
    13,648.30/20,470.16 = 3,788.58/x
  3. Step 3: Cross multiply
    13,648.30x = 20,470.16 × 3,788.58
  4. Step 4: Simplify right side
    13,648.30x = 77,552,838.77
  5. Step 5: Solve for x
    x = 77,552,838.77/13,648.30
  6. Step 6: Final answer
    x = 5,682.23

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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.