Home / 18,742.65-25,857.13-13,080.68

Finding the Fourth Proportional to 18,742.65, 25,857.13 and 13,080.68

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Solution

The fourth proportional to 18,742.65, 25,857.13 and 13,080.68 is: 18,045.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.65 : 25,857.13 = 13,080.68 : x
  2. Step 2: Convert to fraction form
    18,742.65/25,857.13 = 13,080.68/x
  3. Step 3: Cross multiply
    18,742.65x = 25,857.13 × 13,080.68
  4. Step 4: Simplify right side
    18,742.65x = 338,228,875.19
  5. Step 5: Solve for x
    x = 338,228,875.19/18,742.65
  6. Step 6: Final answer
    x = 18,045.95

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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.