Home / 21,555.96-29,746.92-12,124.50

Finding the Fourth Proportional to 21,555.96, 29,746.92 and 12,124.50

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Solution

The fourth proportional to 21,555.96, 29,746.92 and 12,124.50 is: 16,731.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.96 : 29,746.92 = 12,124.50 : x
  2. Step 2: Convert to fraction form
    21,555.96/29,746.92 = 12,124.50/x
  3. Step 3: Cross multiply
    21,555.96x = 29,746.92 × 12,124.50
  4. Step 4: Simplify right side
    21,555.96x = 360,666,531.54
  5. Step 5: Solve for x
    x = 360,666,531.54/21,555.96
  6. Step 6: Final answer
    x = 16,731.64

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1.5x scale

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.