Home / 23,129.03-31,918.16-12,518.66

Finding the Fourth Proportional to 23,129.03, 31,918.16 and 12,518.66

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Solution

The fourth proportional to 23,129.03, 31,918.16 and 12,518.66 is: 17,275.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.03 : 31,918.16 = 12,518.66 : x
  2. Step 2: Convert to fraction form
    23,129.03/31,918.16 = 12,518.66/x
  3. Step 3: Cross multiply
    23,129.03x = 31,918.16 × 12,518.66
  4. Step 4: Simplify right side
    23,129.03x = 399,572,592.87
  5. Step 5: Solve for x
    x = 399,572,592.87/23,129.03
  6. Step 6: Final answer
    x = 17,275.80

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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.