Home / 21,988.52-30,343.60-11,916.52

Finding the Fourth Proportional to 21,988.52, 30,343.60 and 11,916.52

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Solution

The fourth proportional to 21,988.52, 30,343.60 and 11,916.52 is: 16,444.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.52 : 30,343.60 = 11,916.52 : x
  2. Step 2: Convert to fraction form
    21,988.52/30,343.60 = 11,916.52/x
  3. Step 3: Cross multiply
    21,988.52x = 30,343.60 × 11,916.52
  4. Step 4: Simplify right side
    21,988.52x = 361,590,116.27
  5. Step 5: Solve for x
    x = 361,590,116.27/21,988.52
  6. Step 6: Final answer
    x = 16,444.50

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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.