Home / 21,337.42-29,450.91-12,960.94

Finding the Fourth Proportional to 21,337.42, 29,450.91 and 12,960.94

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Solution

The fourth proportional to 21,337.42, 29,450.91 and 12,960.94 is: 17,889.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.42 : 29,450.91 = 12,960.94 : x
  2. Step 2: Convert to fraction form
    21,337.42/29,450.91 = 12,960.94/x
  3. Step 3: Cross multiply
    21,337.42x = 29,450.91 × 12,960.94
  4. Step 4: Simplify right side
    21,337.42x = 381,711,477.46
  5. Step 5: Solve for x
    x = 381,711,477.46/21,337.42
  6. Step 6: Final answer
    x = 17,889.30

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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.