Home / 25,890.86-38,660.68-20,566.10

Finding the Fourth Proportional to 25,890.86, 38,660.68 and 20,566.10

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Solution

The fourth proportional to 25,890.86, 38,660.68 and 20,566.10 is: 30,709.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,890.86 : 38,660.68 = 20,566.10 : x
  2. Step 2: Convert to fraction form
    25,890.86/38,660.68 = 20,566.10/x
  3. Step 3: Cross multiply
    25,890.86x = 38,660.68 × 20,566.10
  4. Step 4: Simplify right side
    25,890.86x = 795,099,410.95
  5. Step 5: Solve for x
    x = 795,099,410.95/25,890.86
  6. Step 6: Final answer
    x = 30,709.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.