Home / 25,956.09-38,939.00-8,421.21

Finding the Fourth Proportional to 25,956.09, 38,939.00 and 8,421.21

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Solution

The fourth proportional to 25,956.09, 38,939.00 and 8,421.21 is: 12,633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,956.09 : 38,939.00 = 8,421.21 : x
  2. Step 2: Convert to fraction form
    25,956.09/38,939.00 = 8,421.21/x
  3. Step 3: Cross multiply
    25,956.09x = 38,939.00 × 8,421.21
  4. Step 4: Simplify right side
    25,956.09x = 327,913,454.08
  5. Step 5: Solve for x
    x = 327,913,454.08/25,956.09
  6. Step 6: Final answer
    x = 12,633.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.