Home / 20,718.65-28,593.80-12,651.86

Finding the Fourth Proportional to 20,718.65, 28,593.80 and 12,651.86

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Solution

The fourth proportional to 20,718.65, 28,593.80 and 12,651.86 is: 17,460.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.65 : 28,593.80 = 12,651.86 : x
  2. Step 2: Convert to fraction form
    20,718.65/28,593.80 = 12,651.86/x
  3. Step 3: Cross multiply
    20,718.65x = 28,593.80 × 12,651.86
  4. Step 4: Simplify right side
    20,718.65x = 361,764,548.24
  5. Step 5: Solve for x
    x = 361,764,548.24/20,718.65
  6. Step 6: Final answer
    x = 17,460.82

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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.