Home / 18,436.58-25,422.38-12,457.88

Finding the Fourth Proportional to 18,436.58, 25,422.38 and 12,457.88

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Solution

The fourth proportional to 18,436.58, 25,422.38 and 12,457.88 is: 17,178.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.58 : 25,422.38 = 12,457.88 : x
  2. Step 2: Convert to fraction form
    18,436.58/25,422.38 = 12,457.88/x
  3. Step 3: Cross multiply
    18,436.58x = 25,422.38 × 12,457.88
  4. Step 4: Simplify right side
    18,436.58x = 316,708,959.35
  5. Step 5: Solve for x
    x = 316,708,959.35/18,436.58
  6. Step 6: Final answer
    x = 17,178.29

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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.