Home / 21,553.90-29,739.92-12,599.67

Finding the Fourth Proportional to 21,553.90, 29,739.92 and 12,599.67

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Solution

The fourth proportional to 21,553.90, 29,739.92 and 12,599.67 is: 17,384.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.90 : 29,739.92 = 12,599.67 : x
  2. Step 2: Convert to fraction form
    21,553.90/29,739.92 = 12,599.67/x
  3. Step 3: Cross multiply
    21,553.90x = 29,739.92 × 12,599.67
  4. Step 4: Simplify right side
    21,553.90x = 374,713,177.83
  5. Step 5: Solve for x
    x = 374,713,177.83/21,553.90
  6. Step 6: Final answer
    x = 17,384.94

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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.