Home / 20,759.30-28,703.13-18,134.90

Finding the Fourth Proportional to 20,759.30, 28,703.13 and 18,134.90

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Solution

The fourth proportional to 20,759.30, 28,703.13 and 18,134.90 is: 25,074.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.30 : 28,703.13 = 18,134.90 : x
  2. Step 2: Convert to fraction form
    20,759.30/28,703.13 = 18,134.90/x
  3. Step 3: Cross multiply
    20,759.30x = 28,703.13 × 18,134.90
  4. Step 4: Simplify right side
    20,759.30x = 520,528,392.24
  5. Step 5: Solve for x
    x = 520,528,392.24/20,759.30
  6. Step 6: Final answer
    x = 25,074.47

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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.