Home / 21,916.98-30,242.97-12,841.74

Finding the Fourth Proportional to 21,916.98, 30,242.97 and 12,841.74

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Solution

The fourth proportional to 21,916.98, 30,242.97 and 12,841.74 is: 17,720.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,916.98 : 30,242.97 = 12,841.74 : x
  2. Step 2: Convert to fraction form
    21,916.98/30,242.97 = 12,841.74/x
  3. Step 3: Cross multiply
    21,916.98x = 30,242.97 × 12,841.74
  4. Step 4: Simplify right side
    21,916.98x = 388,372,357.57
  5. Step 5: Solve for x
    x = 388,372,357.57/21,916.98
  6. Step 6: Final answer
    x = 17,720.16

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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.