Home / 38,738.21-58,111.36-13,780.55

Finding the Fourth Proportional to 38,738.21, 58,111.36 and 13,780.55

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Solution

The fourth proportional to 38,738.21, 58,111.36 and 13,780.55 is: 20,672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,738.21 : 58,111.36 = 13,780.55 : x
  2. Step 2: Convert to fraction form
    38,738.21/58,111.36 = 13,780.55/x
  3. Step 3: Cross multiply
    38,738.21x = 58,111.36 × 13,780.55
  4. Step 4: Simplify right side
    38,738.21x = 800,806,612.88
  5. Step 5: Solve for x
    x = 800,806,612.88/38,738.21
  6. Step 6: Final answer
    x = 20,672.27

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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.