Home / 20,647.04-30,970.56-8,960

Finding the Fourth Proportional to 20,647.04, 30,970.56 and 8,960

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Solution

The fourth proportional to 20,647.04, 30,970.56 and 8,960 is: 13,440

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.04 : 30,970.56 = 8,960 : x
  2. Step 2: Convert to fraction form
    20,647.04/30,970.56 = 8,960/x
  3. Step 3: Cross multiply
    20,647.04x = 30,970.56 × 8,960
  4. Step 4: Simplify right side
    20,647.04x = 277,496,217.60
  5. Step 5: Solve for x
    x = 277,496,217.60/20,647.04
  6. Step 6: Final answer
    x = 13,440

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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.