Home / 21,666.29-29,898.95-12,105.59

Finding the Fourth Proportional to 21,666.29, 29,898.95 and 12,105.59

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Solution

The fourth proportional to 21,666.29, 29,898.95 and 12,105.59 is: 16,705.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,666.29 : 29,898.95 = 12,105.59 : x
  2. Step 2: Convert to fraction form
    21,666.29/29,898.95 = 12,105.59/x
  3. Step 3: Cross multiply
    21,666.29x = 29,898.95 × 12,105.59
  4. Step 4: Simplify right side
    21,666.29x = 361,944,369.60
  5. Step 5: Solve for x
    x = 361,944,369.60/21,666.29
  6. Step 6: Final answer
    x = 16,705.42

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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.