Home / 21,384.96-29,512.80-11,952.92

Finding the Fourth Proportional to 21,384.96, 29,512.80 and 11,952.92

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Solution

The fourth proportional to 21,384.96, 29,512.80 and 11,952.92 is: 16,495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.96 : 29,512.80 = 11,952.92 : x
  2. Step 2: Convert to fraction form
    21,384.96/29,512.80 = 11,952.92/x
  3. Step 3: Cross multiply
    21,384.96x = 29,512.80 × 11,952.92
  4. Step 4: Simplify right side
    21,384.96x = 352,763,989.81
  5. Step 5: Solve for x
    x = 352,763,989.81/21,384.96
  6. Step 6: Final answer
    x = 16,495.89

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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.