Home / 21,513.24-29,696.20-18,476.15

Finding the Fourth Proportional to 21,513.24, 29,696.20 and 18,476.15

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Solution

The fourth proportional to 21,513.24, 29,696.20 and 18,476.15 is: 25,503.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,513.24 : 29,696.20 = 18,476.15 : x
  2. Step 2: Convert to fraction form
    21,513.24/29,696.20 = 18,476.15/x
  3. Step 3: Cross multiply
    21,513.24x = 29,696.20 × 18,476.15
  4. Step 4: Simplify right side
    21,513.24x = 548,671,250.96
  5. Step 5: Solve for x
    x = 548,671,250.96/21,513.24
  6. Step 6: Final answer
    x = 25,503.89

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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.