Home / 13,358.34-20,013.75-11,390.58

Finding the Fourth Proportional to 13,358.34, 20,013.75 and 11,390.58

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Solution

The fourth proportional to 13,358.34, 20,013.75 and 11,390.58 is: 17,065.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.34 : 20,013.75 = 11,390.58 : x
  2. Step 2: Convert to fraction form
    13,358.34/20,013.75 = 11,390.58/x
  3. Step 3: Cross multiply
    13,358.34x = 20,013.75 × 11,390.58
  4. Step 4: Simplify right side
    13,358.34x = 227,968,220.48
  5. Step 5: Solve for x
    x = 227,968,220.48/13,358.34
  6. Step 6: Final answer
    x = 17,065.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.