Home / 28,102.76-42,170.37-15,621.74

Finding the Fourth Proportional to 28,102.76, 42,170.37 and 15,621.74

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Solution

The fourth proportional to 28,102.76, 42,170.37 and 15,621.74 is: 23,441.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.76 : 42,170.37 = 15,621.74 : x
  2. Step 2: Convert to fraction form
    28,102.76/42,170.37 = 15,621.74/x
  3. Step 3: Cross multiply
    28,102.76x = 42,170.37 × 15,621.74
  4. Step 4: Simplify right side
    28,102.76x = 658,774,555.84
  5. Step 5: Solve for x
    x = 658,774,555.84/28,102.76
  6. Step 6: Final answer
    x = 23,441.63

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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.