Home / 21,623.04-29,838.63-12,190.99

Finding the Fourth Proportional to 21,623.04, 29,838.63 and 12,190.99

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Solution

The fourth proportional to 21,623.04, 29,838.63 and 12,190.99 is: 16,822.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.04 : 29,838.63 = 12,190.99 : x
  2. Step 2: Convert to fraction form
    21,623.04/29,838.63 = 12,190.99/x
  3. Step 3: Cross multiply
    21,623.04x = 29,838.63 × 12,190.99
  4. Step 4: Simplify right side
    21,623.04x = 363,762,439.94
  5. Step 5: Solve for x
    x = 363,762,439.94/21,623.04
  6. Step 6: Final answer
    x = 16,822.91

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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.