Home / 13,742.70-18,964.92-7,455.08

Finding the Fourth Proportional to 13,742.70, 18,964.92 and 7,455.08

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Solution

The fourth proportional to 13,742.70, 18,964.92 and 7,455.08 is: 10,288.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.70 : 18,964.92 = 7,455.08 : x
  2. Step 2: Convert to fraction form
    13,742.70/18,964.92 = 7,455.08/x
  3. Step 3: Cross multiply
    13,742.70x = 18,964.92 × 7,455.08
  4. Step 4: Simplify right side
    13,742.70x = 141,384,995.79
  5. Step 5: Solve for x
    x = 141,384,995.79/13,742.70
  6. Step 6: Final answer
    x = 10,288.01

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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.