Home / 13,572.80-18,728.28-7,604.72

Finding the Fourth Proportional to 13,572.80, 18,728.28 and 7,604.72

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Solution

The fourth proportional to 13,572.80, 18,728.28 and 7,604.72 is: 10,493.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.80 : 18,728.28 = 7,604.72 : x
  2. Step 2: Convert to fraction form
    13,572.80/18,728.28 = 7,604.72/x
  3. Step 3: Cross multiply
    13,572.80x = 18,728.28 × 7,604.72
  4. Step 4: Simplify right side
    13,572.80x = 142,423,231.84
  5. Step 5: Solve for x
    x = 142,423,231.84/13,572.80
  6. Step 6: Final answer
    x = 10,493.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.