Home / 21,556.95-29,746.49-12,125.31

Finding the Fourth Proportional to 21,556.95, 29,746.49 and 12,125.31

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Solution

The fourth proportional to 21,556.95, 29,746.49 and 12,125.31 is: 16,731.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,556.95 : 29,746.49 = 12,125.31 : x
  2. Step 2: Convert to fraction form
    21,556.95/29,746.49 = 12,125.31/x
  3. Step 3: Cross multiply
    21,556.95x = 29,746.49 × 12,125.31
  4. Step 4: Simplify right side
    21,556.95x = 360,685,352.04
  5. Step 5: Solve for x
    x = 360,685,352.04/21,556.95
  6. Step 6: Final answer
    x = 16,731.74

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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.