Home / 21,095.17-29,110.46-12,142.99

Finding the Fourth Proportional to 21,095.17, 29,110.46 and 12,142.99

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Solution

The fourth proportional to 21,095.17, 29,110.46 and 12,142.99 is: 16,756.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,095.17 : 29,110.46 = 12,142.99 : x
  2. Step 2: Convert to fraction form
    21,095.17/29,110.46 = 12,142.99/x
  3. Step 3: Cross multiply
    21,095.17x = 29,110.46 × 12,142.99
  4. Step 4: Simplify right side
    21,095.17x = 353,487,936.72
  5. Step 5: Solve for x
    x = 353,487,936.72/21,095.17
  6. Step 6: Final answer
    x = 16,756.82

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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.