Home / 38,780.37-58,170.86-21,240.63

Finding the Fourth Proportional to 38,780.37, 58,170.86 and 21,240.63

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Solution

The fourth proportional to 38,780.37, 58,170.86 and 21,240.63 is: 31,861.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,780.37 : 58,170.86 = 21,240.63 : x
  2. Step 2: Convert to fraction form
    38,780.37/58,170.86 = 21,240.63/x
  3. Step 3: Cross multiply
    38,780.37x = 58,170.86 × 21,240.63
  4. Step 4: Simplify right side
    38,780.37x = 1,235,585,607.84
  5. Step 5: Solve for x
    x = 1,235,585,607.84/38,780.37
  6. Step 6: Final answer
    x = 31,861.11

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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.