Home / 21,895.72-30,216.83-12,950.89

Finding the Fourth Proportional to 21,895.72, 30,216.83 and 12,950.89

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Solution

The fourth proportional to 21,895.72, 30,216.83 and 12,950.89 is: 17,872.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,895.72 : 30,216.83 = 12,950.89 : x
  2. Step 2: Convert to fraction form
    21,895.72/30,216.83 = 12,950.89/x
  3. Step 3: Cross multiply
    21,895.72x = 30,216.83 × 12,950.89
  4. Step 4: Simplify right side
    21,895.72x = 391,334,841.48
  5. Step 5: Solve for x
    x = 391,334,841.48/21,895.72
  6. Step 6: Final answer
    x = 17,872.66

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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.