Home / 20,830.91-28,760.06-18,588.93

Finding the Fourth Proportional to 20,830.91, 28,760.06 and 18,588.93

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Solution

The fourth proportional to 20,830.91, 28,760.06 and 18,588.93 is: 25,664.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.91 : 28,760.06 = 18,588.93 : x
  2. Step 2: Convert to fraction form
    20,830.91/28,760.06 = 18,588.93/x
  3. Step 3: Cross multiply
    20,830.91x = 28,760.06 × 18,588.93
  4. Step 4: Simplify right side
    20,830.91x = 534,618,680.76
  5. Step 5: Solve for x
    x = 534,618,680.76/20,830.91
  6. Step 6: Final answer
    x = 25,664.69

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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.