Home / 21,238.92-29,307.33-12,285.09

Finding the Fourth Proportional to 21,238.92, 29,307.33 and 12,285.09

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Solution

The fourth proportional to 21,238.92, 29,307.33 and 12,285.09 is: 16,952.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.92 : 29,307.33 = 12,285.09 : x
  2. Step 2: Convert to fraction form
    21,238.92/29,307.33 = 12,285.09/x
  3. Step 3: Cross multiply
    21,238.92x = 29,307.33 × 12,285.09
  4. Step 4: Simplify right side
    21,238.92x = 360,043,186.71
  5. Step 5: Solve for x
    x = 360,043,186.71/21,238.92
  6. Step 6: Final answer
    x = 16,952.05

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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.