Home / 21,955.66-30,299.67-12,397.56

Finding the Fourth Proportional to 21,955.66, 30,299.67 and 12,397.56

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Solution

The fourth proportional to 21,955.66, 30,299.67 and 12,397.56 is: 17,109.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.66 : 30,299.67 = 12,397.56 : x
  2. Step 2: Convert to fraction form
    21,955.66/30,299.67 = 12,397.56/x
  3. Step 3: Cross multiply
    21,955.66x = 30,299.67 × 12,397.56
  4. Step 4: Simplify right side
    21,955.66x = 375,641,863.18
  5. Step 5: Solve for x
    x = 375,641,863.18/21,955.66
  6. Step 6: Final answer
    x = 17,109.11

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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.