Home / 25,989.90-38,988.96-8,455.62

Finding the Fourth Proportional to 25,989.90, 38,988.96 and 8,455.62

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Solution

The fourth proportional to 25,989.90, 38,988.96 and 8,455.62 is: 12,684.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,989.90 : 38,988.96 = 8,455.62 : x
  2. Step 2: Convert to fraction form
    25,989.90/38,988.96 = 8,455.62/x
  3. Step 3: Cross multiply
    25,989.90x = 38,988.96 × 8,455.62
  4. Step 4: Simplify right side
    25,989.90x = 329,675,829.96
  5. Step 5: Solve for x
    x = 329,675,829.96/25,989.90
  6. Step 6: Final answer
    x = 12,684.77

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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.