Home / 13,416.18-18,516.45-12,825.54

Finding the Fourth Proportional to 13,416.18, 18,516.45 and 12,825.54

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Solution

The fourth proportional to 13,416.18, 18,516.45 and 12,825.54 is: 17,701.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.18 : 18,516.45 = 12,825.54 : x
  2. Step 2: Convert to fraction form
    13,416.18/18,516.45 = 12,825.54/x
  3. Step 3: Cross multiply
    13,416.18x = 18,516.45 × 12,825.54
  4. Step 4: Simplify right side
    13,416.18x = 237,483,470.13
  5. Step 5: Solve for x
    x = 237,483,470.13/13,416.18
  6. Step 6: Final answer
    x = 17,701.27

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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.