Home / 21,625.55-29,838.16-13,127.46

Finding the Fourth Proportional to 21,625.55, 29,838.16 and 13,127.46

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Solution

The fourth proportional to 21,625.55, 29,838.16 and 13,127.46 is: 18,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,625.55 : 29,838.16 = 13,127.46 : x
  2. Step 2: Convert to fraction form
    21,625.55/29,838.16 = 13,127.46/x
  3. Step 3: Cross multiply
    21,625.55x = 29,838.16 × 13,127.46
  4. Step 4: Simplify right side
    21,625.55x = 391,699,219.05
  5. Step 5: Solve for x
    x = 391,699,219.05/21,625.55
  6. Step 6: Final answer
    x = 18,112.80

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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.