Home / 21,822.98-30,114.95-13,339.35

Finding the Fourth Proportional to 21,822.98, 30,114.95 and 13,339.35

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Solution

The fourth proportional to 21,822.98, 30,114.95 and 13,339.35 is: 18,407.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,822.98 : 30,114.95 = 13,339.35 : x
  2. Step 2: Convert to fraction form
    21,822.98/30,114.95 = 13,339.35/x
  3. Step 3: Cross multiply
    21,822.98x = 30,114.95 × 13,339.35
  4. Step 4: Simplify right side
    21,822.98x = 401,713,791.59
  5. Step 5: Solve for x
    x = 401,713,791.59/21,822.98
  6. Step 6: Final answer
    x = 18,407.84

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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.