Home / 18,424.45-25,405.67-12,445.74

Finding the Fourth Proportional to 18,424.45, 25,405.67 and 12,445.74

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Solution

The fourth proportional to 18,424.45, 25,405.67 and 12,445.74 is: 17,161.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,424.45 : 25,405.67 = 12,445.74 : x
  2. Step 2: Convert to fraction form
    18,424.45/25,405.67 = 12,445.74/x
  3. Step 3: Cross multiply
    18,424.45x = 25,405.67 × 12,445.74
  4. Step 4: Simplify right side
    18,424.45x = 316,192,301.12
  5. Step 5: Solve for x
    x = 316,192,301.12/18,424.45
  6. Step 6: Final answer
    x = 17,161.56

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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.