Home / 22,830.90-31,508.91-13,399.26

Finding the Fourth Proportional to 22,830.90, 31,508.91 and 13,399.26

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Solution

The fourth proportional to 22,830.90, 31,508.91 and 13,399.26 is: 18,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,830.90 : 31,508.91 = 13,399.26 : x
  2. Step 2: Convert to fraction form
    22,830.90/31,508.91 = 13,399.26/x
  3. Step 3: Cross multiply
    22,830.90x = 31,508.91 × 13,399.26
  4. Step 4: Simplify right side
    22,830.90x = 422,196,077.41
  5. Step 5: Solve for x
    x = 422,196,077.41/22,830.90
  6. Step 6: Final answer
    x = 18,492.31

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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.