Home / 13,938.04-20,904.54-5,617.72

Finding the Fourth Proportional to 13,938.04, 20,904.54 and 5,617.72

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Solution

The fourth proportional to 13,938.04, 20,904.54 and 5,617.72 is: 8,425.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.04 : 20,904.54 = 5,617.72 : x
  2. Step 2: Convert to fraction form
    13,938.04/20,904.54 = 5,617.72/x
  3. Step 3: Cross multiply
    13,938.04x = 20,904.54 × 5,617.72
  4. Step 4: Simplify right side
    13,938.04x = 117,435,852.45
  5. Step 5: Solve for x
    x = 117,435,852.45/13,938.04
  6. Step 6: Final answer
    x = 8,425.56

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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.