Home / 21,658.86-29,895.48-12,706.74

Finding the Fourth Proportional to 21,658.86, 29,895.48 and 12,706.74

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Solution

The fourth proportional to 21,658.86, 29,895.48 and 12,706.74 is: 17,538.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.86 : 29,895.48 = 12,706.74 : x
  2. Step 2: Convert to fraction form
    21,658.86/29,895.48 = 12,706.74/x
  3. Step 3: Cross multiply
    21,658.86x = 29,895.48 × 12,706.74
  4. Step 4: Simplify right side
    21,658.86x = 379,874,091.54
  5. Step 5: Solve for x
    x = 379,874,091.54/21,658.86
  6. Step 6: Final answer
    x = 17,538.97

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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.