Home / 25,985.84-38,982.84-8,451.57

Finding the Fourth Proportional to 25,985.84, 38,982.84 and 8,451.57

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Solution

The fourth proportional to 25,985.84, 38,982.84 and 8,451.57 is: 12,678.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,985.84 : 38,982.84 = 8,451.57 : x
  2. Step 2: Convert to fraction form
    25,985.84/38,982.84 = 8,451.57/x
  3. Step 3: Cross multiply
    25,985.84x = 38,982.84 × 8,451.57
  4. Step 4: Simplify right side
    25,985.84x = 329,466,201.06
  5. Step 5: Solve for x
    x = 329,466,201.06/25,985.84
  6. Step 6: Final answer
    x = 12,678.68

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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.