Home / 21,474.65-29,628.29-12,398.82

Finding the Fourth Proportional to 21,474.65, 29,628.29 and 12,398.82

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Solution

The fourth proportional to 21,474.65, 29,628.29 and 12,398.82 is: 17,106.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,474.65 : 29,628.29 = 12,398.82 : x
  2. Step 2: Convert to fraction form
    21,474.65/29,628.29 = 12,398.82/x
  3. Step 3: Cross multiply
    21,474.65x = 29,628.29 × 12,398.82
  4. Step 4: Simplify right side
    21,474.65x = 367,355,772.62
  5. Step 5: Solve for x
    x = 367,355,772.62/21,474.65
  6. Step 6: Final answer
    x = 17,106.49

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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.