Home / 13,389.20-18,474.72-7,646.84

Finding the Fourth Proportional to 13,389.20, 18,474.72 and 7,646.84

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Solution

The fourth proportional to 13,389.20, 18,474.72 and 7,646.84 is: 10,551.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.20 : 18,474.72 = 7,646.84 : x
  2. Step 2: Convert to fraction form
    13,389.20/18,474.72 = 7,646.84/x
  3. Step 3: Cross multiply
    13,389.20x = 18,474.72 × 7,646.84
  4. Step 4: Simplify right side
    13,389.20x = 141,273,227.88
  5. Step 5: Solve for x
    x = 141,273,227.88/13,389.20
  6. Step 6: Final answer
    x = 10,551.28

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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.