Home / 21,124.07-29,158.49-12,175.14

Finding the Fourth Proportional to 21,124.07, 29,158.49 and 12,175.14

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Solution

The fourth proportional to 21,124.07, 29,158.49 and 12,175.14 is: 16,805.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.07 : 29,158.49 = 12,175.14 : x
  2. Step 2: Convert to fraction form
    21,124.07/29,158.49 = 12,175.14/x
  3. Step 3: Cross multiply
    21,124.07x = 29,158.49 × 12,175.14
  4. Step 4: Simplify right side
    21,124.07x = 355,008,637.06
  5. Step 5: Solve for x
    x = 355,008,637.06/21,124.07
  6. Step 6: Final answer
    x = 16,805.89

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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.