Home / 15,318.54-21,120.20-10,004.94

Finding the Fourth Proportional to 15,318.54, 21,120.20 and 10,004.94

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Solution

The fourth proportional to 15,318.54, 21,120.20 and 10,004.94 is: 13,794.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.54 : 21,120.20 = 10,004.94 : x
  2. Step 2: Convert to fraction form
    15,318.54/21,120.20 = 10,004.94/x
  3. Step 3: Cross multiply
    15,318.54x = 21,120.20 × 10,004.94
  4. Step 4: Simplify right side
    15,318.54x = 211,306,333.79
  5. Step 5: Solve for x
    x = 211,306,333.79/15,318.54
  6. Step 6: Final answer
    x = 13,794.16

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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.