Home / 23,172-31,977.18-12,561.36

Finding the Fourth Proportional to 23,172, 31,977.18 and 12,561.36

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Solution

The fourth proportional to 23,172, 31,977.18 and 12,561.36 is: 17,334.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,172 : 31,977.18 = 12,561.36 : x
  2. Step 2: Convert to fraction form
    23,172/31,977.18 = 12,561.36/x
  3. Step 3: Cross multiply
    23,172x = 31,977.18 × 12,561.36
  4. Step 4: Simplify right side
    23,172x = 401,676,869.76
  5. Step 5: Solve for x
    x = 401,676,869.76/23,172
  6. Step 6: Final answer
    x = 17,334.58

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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.