Home / 21,364.23-29,483.77-12,869.02

Finding the Fourth Proportional to 21,364.23, 29,483.77 and 12,869.02

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Solution

The fourth proportional to 21,364.23, 29,483.77 and 12,869.02 is: 17,759.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,364.23 : 29,483.77 = 12,869.02 : x
  2. Step 2: Convert to fraction form
    21,364.23/29,483.77 = 12,869.02/x
  3. Step 3: Cross multiply
    21,364.23x = 29,483.77 × 12,869.02
  4. Step 4: Simplify right side
    21,364.23x = 379,427,161.46
  5. Step 5: Solve for x
    x = 379,427,161.46/21,364.23
  6. Step 6: Final answer
    x = 17,759.93

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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.