Home / 13,742.46-18,964.94-8,434.26

Finding the Fourth Proportional to 13,742.46, 18,964.94 and 8,434.26

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Solution

The fourth proportional to 13,742.46, 18,964.94 and 8,434.26 is: 11,639.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.46 : 18,964.94 = 8,434.26 : x
  2. Step 2: Convert to fraction form
    13,742.46/18,964.94 = 8,434.26/x
  3. Step 3: Cross multiply
    13,742.46x = 18,964.94 × 8,434.26
  4. Step 4: Simplify right side
    13,742.46x = 159,955,192.67
  5. Step 5: Solve for x
    x = 159,955,192.67/13,742.46
  6. Step 6: Final answer
    x = 11,639.49

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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.