Home / 18,398.75-25,390.87-13,030.82

Finding the Fourth Proportional to 18,398.75, 25,390.87 and 13,030.82

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Solution

The fourth proportional to 18,398.75, 25,390.87 and 13,030.82 is: 17,982.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.75 : 25,390.87 = 13,030.82 : x
  2. Step 2: Convert to fraction form
    18,398.75/25,390.87 = 13,030.82/x
  3. Step 3: Cross multiply
    18,398.75x = 25,390.87 × 13,030.82
  4. Step 4: Simplify right side
    18,398.75x = 330,863,935.12
  5. Step 5: Solve for x
    x = 330,863,935.12/18,398.75
  6. Step 6: Final answer
    x = 17,982.96

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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.