Home / 21,587.96-29,794.11-12,156.50

Finding the Fourth Proportional to 21,587.96, 29,794.11 and 12,156.50

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Solution

The fourth proportional to 21,587.96, 29,794.11 and 12,156.50 is: 16,777.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,587.96 : 29,794.11 = 12,156.50 : x
  2. Step 2: Convert to fraction form
    21,587.96/29,794.11 = 12,156.50/x
  3. Step 3: Cross multiply
    21,587.96x = 29,794.11 × 12,156.50
  4. Step 4: Simplify right side
    21,587.96x = 362,192,098.22
  5. Step 5: Solve for x
    x = 362,192,098.22/21,587.96
  6. Step 6: Final answer
    x = 16,777.50

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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.