Home / 21,386.25-29,513.03-11,956.77

Finding the Fourth Proportional to 21,386.25, 29,513.03 and 11,956.77

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Solution

The fourth proportional to 21,386.25, 29,513.03 and 11,956.77 is: 16,500.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,386.25 : 29,513.03 = 11,956.77 : x
  2. Step 2: Convert to fraction form
    21,386.25/29,513.03 = 11,956.77/x
  3. Step 3: Cross multiply
    21,386.25x = 29,513.03 × 11,956.77
  4. Step 4: Simplify right side
    21,386.25x = 352,880,451.93
  5. Step 5: Solve for x
    x = 352,880,451.93/21,386.25
  6. Step 6: Final answer
    x = 16,500.34

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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.