Home / 13,351.10-18,422.88-7,381.94

Finding the Fourth Proportional to 13,351.10, 18,422.88 and 7,381.94

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Solution

The fourth proportional to 13,351.10, 18,422.88 and 7,381.94 is: 10,186.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.10 : 18,422.88 = 7,381.94 : x
  2. Step 2: Convert to fraction form
    13,351.10/18,422.88 = 7,381.94/x
  3. Step 3: Cross multiply
    13,351.10x = 18,422.88 × 7,381.94
  4. Step 4: Simplify right side
    13,351.10x = 135,996,502.67
  5. Step 5: Solve for x
    x = 135,996,502.67/13,351.10
  6. Step 6: Final answer
    x = 10,186.17

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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.