Home / 18,698.67-25,790.63-12,719.70

Finding the Fourth Proportional to 18,698.67, 25,790.63 and 12,719.70

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Solution

The fourth proportional to 18,698.67, 25,790.63 and 12,719.70 is: 17,543.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.67 : 25,790.63 = 12,719.70 : x
  2. Step 2: Convert to fraction form
    18,698.67/25,790.63 = 12,719.70/x
  3. Step 3: Cross multiply
    18,698.67x = 25,790.63 × 12,719.70
  4. Step 4: Simplify right side
    18,698.67x = 328,049,012.81
  5. Step 5: Solve for x
    x = 328,049,012.81/18,698.67
  6. Step 6: Final answer
    x = 17,543.98

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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.