Home / 28,150.76-42,189.21-15,664.34

Finding the Fourth Proportional to 28,150.76, 42,189.21 and 15,664.34

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Solution

The fourth proportional to 28,150.76, 42,189.21 and 15,664.34 is: 23,475.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,150.76 : 42,189.21 = 15,664.34 : x
  2. Step 2: Convert to fraction form
    28,150.76/42,189.21 = 15,664.34/x
  3. Step 3: Cross multiply
    28,150.76x = 42,189.21 × 15,664.34
  4. Step 4: Simplify right side
    28,150.76x = 660,865,918.83
  5. Step 5: Solve for x
    x = 660,865,918.83/28,150.76
  6. Step 6: Final answer
    x = 23,475.96

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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.