Home / 25,920.10-38,886.33-8,389.93

Finding the Fourth Proportional to 25,920.10, 38,886.33 and 8,389.93

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Solution

The fourth proportional to 25,920.10, 38,886.33 and 8,389.93 is: 12,586.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,920.10 : 38,886.33 = 8,389.93 : x
  2. Step 2: Convert to fraction form
    25,920.10/38,886.33 = 8,389.93/x
  3. Step 3: Cross multiply
    25,920.10x = 38,886.33 × 8,389.93
  4. Step 4: Simplify right side
    25,920.10x = 326,253,546.62
  5. Step 5: Solve for x
    x = 326,253,546.62/25,920.10
  6. Step 6: Final answer
    x = 12,586.89

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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.