Home / 18,686.90-25,774.37-12,707.94

Finding the Fourth Proportional to 18,686.90, 25,774.37 and 12,707.94

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Solution

The fourth proportional to 18,686.90, 25,774.37 and 12,707.94 is: 17,527.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.90 : 25,774.37 = 12,707.94 : x
  2. Step 2: Convert to fraction form
    18,686.90/25,774.37 = 12,707.94/x
  3. Step 3: Cross multiply
    18,686.90x = 25,774.37 × 12,707.94
  4. Step 4: Simplify right side
    18,686.90x = 327,539,147.50
  5. Step 5: Solve for x
    x = 327,539,147.50/18,686.90
  6. Step 6: Final answer
    x = 17,527.74

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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.