Home / 18,421.07-25,394.31-12,747.17

Finding the Fourth Proportional to 18,421.07, 25,394.31 and 12,747.17

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Solution

The fourth proportional to 18,421.07, 25,394.31 and 12,747.17 is: 17,572.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.07 : 25,394.31 = 12,747.17 : x
  2. Step 2: Convert to fraction form
    18,421.07/25,394.31 = 12,747.17/x
  3. Step 3: Cross multiply
    18,421.07x = 25,394.31 × 12,747.17
  4. Step 4: Simplify right side
    18,421.07x = 323,705,586.60
  5. Step 5: Solve for x
    x = 323,705,586.60/18,421.07
  6. Step 6: Final answer
    x = 17,572.57

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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.