Home / 21,971.09-30,322.28-12,541.07

Finding the Fourth Proportional to 21,971.09, 30,322.28 and 12,541.07

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Solution

The fourth proportional to 21,971.09, 30,322.28 and 12,541.07 is: 17,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,971.09 : 30,322.28 = 12,541.07 : x
  2. Step 2: Convert to fraction form
    21,971.09/30,322.28 = 12,541.07/x
  3. Step 3: Cross multiply
    21,971.09x = 30,322.28 × 12,541.07
  4. Step 4: Simplify right side
    21,971.09x = 380,273,773.33
  5. Step 5: Solve for x
    x = 380,273,773.33/21,971.09
  6. Step 6: Final answer
    x = 17,307.92

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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.