Home / 21,799.99-30,084.92-12,369.43

Finding the Fourth Proportional to 21,799.99, 30,084.92 and 12,369.43

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Solution

The fourth proportional to 21,799.99, 30,084.92 and 12,369.43 is: 17,070.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,799.99 : 30,084.92 = 12,369.43 : x
  2. Step 2: Convert to fraction form
    21,799.99/30,084.92 = 12,369.43/x
  3. Step 3: Cross multiply
    21,799.99x = 30,084.92 × 12,369.43
  4. Step 4: Simplify right side
    21,799.99x = 372,133,312.00
  5. Step 5: Solve for x
    x = 372,133,312.00/21,799.99
  6. Step 6: Final answer
    x = 17,070.34

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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.