Home / 28,035.46-38,688.72-15,460.21

Finding the Fourth Proportional to 28,035.46, 38,688.72 and 15,460.21

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Solution

The fourth proportional to 28,035.46, 38,688.72 and 15,460.21 is: 21,334.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,035.46 : 38,688.72 = 15,460.21 : x
  2. Step 2: Convert to fraction form
    28,035.46/38,688.72 = 15,460.21/x
  3. Step 3: Cross multiply
    28,035.46x = 38,688.72 × 15,460.21
  4. Step 4: Simplify right side
    28,035.46x = 598,135,735.83
  5. Step 5: Solve for x
    x = 598,135,735.83/28,035.46
  6. Step 6: Final answer
    x = 21,334.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.