Home / 21,384.80-29,510.10-11,694.08

Finding the Fourth Proportional to 21,384.80, 29,510.10 and 11,694.08

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Solution

The fourth proportional to 21,384.80, 29,510.10 and 11,694.08 is: 16,137.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.80 : 29,510.10 = 11,694.08 : x
  2. Step 2: Convert to fraction form
    21,384.80/29,510.10 = 11,694.08/x
  3. Step 3: Cross multiply
    21,384.80x = 29,510.10 × 11,694.08
  4. Step 4: Simplify right side
    21,384.80x = 345,093,411.74
  5. Step 5: Solve for x
    x = 345,093,411.74/21,384.80
  6. Step 6: Final answer
    x = 16,137.32

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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.