Home / 13,312.33-18,395.30-11,397.79

Finding the Fourth Proportional to 13,312.33, 18,395.30 and 11,397.79

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Solution

The fourth proportional to 13,312.33, 18,395.30 and 11,397.79 is: 15,749.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.33 : 18,395.30 = 11,397.79 : x
  2. Step 2: Convert to fraction form
    13,312.33/18,395.30 = 11,397.79/x
  3. Step 3: Cross multiply
    13,312.33x = 18,395.30 × 11,397.79
  4. Step 4: Simplify right side
    13,312.33x = 209,665,817.88
  5. Step 5: Solve for x
    x = 209,665,817.88/13,312.33
  6. Step 6: Final answer
    x = 15,749.75

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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.