Home / 13,354.46-20,133.10-12,640.04

Finding the Fourth Proportional to 13,354.46, 20,133.10 and 12,640.04

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Solution

The fourth proportional to 13,354.46, 20,133.10 and 12,640.04 is: 19,056.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.46 : 20,133.10 = 12,640.04 : x
  2. Step 2: Convert to fraction form
    13,354.46/20,133.10 = 12,640.04/x
  3. Step 3: Cross multiply
    13,354.46x = 20,133.10 × 12,640.04
  4. Step 4: Simplify right side
    13,354.46x = 254,483,126.12
  5. Step 5: Solve for x
    x = 254,483,126.12/13,354.46
  6. Step 6: Final answer
    x = 19,056.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.