Home / 18,669.86-25,763.21-11,116.75

Finding the Fourth Proportional to 18,669.86, 25,763.21 and 11,116.75

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Solution

The fourth proportional to 18,669.86, 25,763.21 and 11,116.75 is: 15,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.86 : 25,763.21 = 11,116.75 : x
  2. Step 2: Convert to fraction form
    18,669.86/25,763.21 = 11,116.75/x
  3. Step 3: Cross multiply
    18,669.86x = 25,763.21 × 11,116.75
  4. Step 4: Simplify right side
    18,669.86x = 286,403,086.46
  5. Step 5: Solve for x
    x = 286,403,086.46/18,669.86
  6. Step 6: Final answer
    x = 15,340.40

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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.