Home / 22,720.34-31,358.73-13,291.22

Finding the Fourth Proportional to 22,720.34, 31,358.73 and 13,291.22

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Solution

The fourth proportional to 22,720.34, 31,358.73 and 13,291.22 is: 18,344.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.34 : 31,358.73 = 13,291.22 : x
  2. Step 2: Convert to fraction form
    22,720.34/31,358.73 = 13,291.22/x
  3. Step 3: Cross multiply
    22,720.34x = 31,358.73 × 13,291.22
  4. Step 4: Simplify right side
    22,720.34x = 416,795,779.35
  5. Step 5: Solve for x
    x = 416,795,779.35/22,720.34
  6. Step 6: Final answer
    x = 18,344.61

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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.