Home / 23,131.40-31,921.44-12,521.04

Finding the Fourth Proportional to 23,131.40, 31,921.44 and 12,521.04

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Solution

The fourth proportional to 23,131.40, 31,921.44 and 12,521.04 is: 17,279.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,131.40 : 31,921.44 = 12,521.04 : x
  2. Step 2: Convert to fraction form
    23,131.40/31,921.44 = 12,521.04/x
  3. Step 3: Cross multiply
    23,131.40x = 31,921.44 × 12,521.04
  4. Step 4: Simplify right side
    23,131.40x = 399,689,627.10
  5. Step 5: Solve for x
    x = 399,689,627.10/23,131.40
  6. Step 6: Final answer
    x = 17,279.09

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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.