Home / 18,615.20-25,688.26-10,658.16

Finding the Fourth Proportional to 18,615.20, 25,688.26 and 10,658.16

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Solution

The fourth proportional to 18,615.20, 25,688.26 and 10,658.16 is: 14,707.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.20 : 25,688.26 = 10,658.16 : x
  2. Step 2: Convert to fraction form
    18,615.20/25,688.26 = 10,658.16/x
  3. Step 3: Cross multiply
    18,615.20x = 25,688.26 × 10,658.16
  4. Step 4: Simplify right side
    18,615.20x = 273,789,585.20
  5. Step 5: Solve for x
    x = 273,789,585.20/18,615.20
  6. Step 6: Final answer
    x = 14,707.85

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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.