Home / 21,655.96-29,884.62-12,225.40

Finding the Fourth Proportional to 21,655.96, 29,884.62 and 12,225.40

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Solution

The fourth proportional to 21,655.96, 29,884.62 and 12,225.40 is: 16,870.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,655.96 : 29,884.62 = 12,225.40 : x
  2. Step 2: Convert to fraction form
    21,655.96/29,884.62 = 12,225.40/x
  3. Step 3: Cross multiply
    21,655.96x = 29,884.62 × 12,225.40
  4. Step 4: Simplify right side
    21,655.96x = 365,351,433.35
  5. Step 5: Solve for x
    x = 365,351,433.35/21,655.96
  6. Step 6: Final answer
    x = 16,870.71

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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.