Home / 18,636.40-25,717.76-10,138.16

Finding the Fourth Proportional to 18,636.40, 25,717.76 and 10,138.16

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Solution

The fourth proportional to 18,636.40, 25,717.76 and 10,138.16 is: 13,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.40 : 25,717.76 = 10,138.16 : x
  2. Step 2: Convert to fraction form
    18,636.40/25,717.76 = 10,138.16/x
  3. Step 3: Cross multiply
    18,636.40x = 25,717.76 × 10,138.16
  4. Step 4: Simplify right side
    18,636.40x = 260,730,765.72
  5. Step 5: Solve for x
    x = 260,730,765.72/18,636.40
  6. Step 6: Final answer
    x = 13,990.40

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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.