Home / 21,322.09-29,424.09-12,370.42

Finding the Fourth Proportional to 21,322.09, 29,424.09 and 12,370.42

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Solution

The fourth proportional to 21,322.09, 29,424.09 and 12,370.42 is: 17,070.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.09 : 29,424.09 = 12,370.42 : x
  2. Step 2: Convert to fraction form
    21,322.09/29,424.09 = 12,370.42/x
  3. Step 3: Cross multiply
    21,322.09x = 29,424.09 × 12,370.42
  4. Step 4: Simplify right side
    21,322.09x = 363,988,351.42
  5. Step 5: Solve for x
    x = 363,988,351.42/21,322.09
  6. Step 6: Final answer
    x = 17,070.95

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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.