Home / 21,312.33-31,927.60-11,923.91

Finding the Fourth Proportional to 21,312.33, 31,927.60 and 11,923.91

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Solution

The fourth proportional to 21,312.33, 31,927.60 and 11,923.91 is: 17,862.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.33 : 31,927.60 = 11,923.91 : x
  2. Step 2: Convert to fraction form
    21,312.33/31,927.60 = 11,923.91/x
  3. Step 3: Cross multiply
    21,312.33x = 31,927.60 × 11,923.91
  4. Step 4: Simplify right side
    21,312.33x = 380,701,828.92
  5. Step 5: Solve for x
    x = 380,701,828.92/21,312.33
  6. Step 6: Final answer
    x = 17,862.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.