Home / 21,586.26-29,791.56-13,088.28

Finding the Fourth Proportional to 21,586.26, 29,791.56 and 13,088.28

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Solution

The fourth proportional to 21,586.26, 29,791.56 and 13,088.28 is: 18,063.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,586.26 : 29,791.56 = 13,088.28 : x
  2. Step 2: Convert to fraction form
    21,586.26/29,791.56 = 13,088.28/x
  3. Step 3: Cross multiply
    21,586.26x = 29,791.56 × 13,088.28
  4. Step 4: Simplify right side
    21,586.26x = 389,920,278.92
  5. Step 5: Solve for x
    x = 389,920,278.92/21,586.26
  6. Step 6: Final answer
    x = 18,063.36

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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.