Home / 18,660.57-25,756.88-12,291.81

Finding the Fourth Proportional to 18,660.57, 25,756.88 and 12,291.81

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Solution

The fourth proportional to 18,660.57, 25,756.88 and 12,291.81 is: 16,966.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.57 : 25,756.88 = 12,291.81 : x
  2. Step 2: Convert to fraction form
    18,660.57/25,756.88 = 12,291.81/x
  3. Step 3: Cross multiply
    18,660.57x = 25,756.88 × 12,291.81
  4. Step 4: Simplify right side
    18,660.57x = 316,598,705.88
  5. Step 5: Solve for x
    x = 316,598,705.88/18,660.57
  6. Step 6: Final answer
    x = 16,966.19

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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.