Home / 23,131.50-31,921.47-12,521.22

Finding the Fourth Proportional to 23,131.50, 31,921.47 and 12,521.22

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Solution

The fourth proportional to 23,131.50, 31,921.47 and 12,521.22 is: 17,279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,131.50 : 31,921.47 = 12,521.22 : x
  2. Step 2: Convert to fraction form
    23,131.50/31,921.47 = 12,521.22/x
  3. Step 3: Cross multiply
    23,131.50x = 31,921.47 × 12,521.22
  4. Step 4: Simplify right side
    23,131.50x = 399,695,748.59
  5. Step 5: Solve for x
    x = 399,695,748.59/23,131.50
  6. Step 6: Final answer
    x = 17,279.28

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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.