Home / 21,541.69-29,730.20-12,110.25

Finding the Fourth Proportional to 21,541.69, 29,730.20 and 12,110.25

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Solution

The fourth proportional to 21,541.69, 29,730.20 and 12,110.25 is: 16,713.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,541.69 : 29,730.20 = 12,110.25 : x
  2. Step 2: Convert to fraction form
    21,541.69/29,730.20 = 12,110.25/x
  3. Step 3: Cross multiply
    21,541.69x = 29,730.20 × 12,110.25
  4. Step 4: Simplify right side
    21,541.69x = 360,040,154.55
  5. Step 5: Solve for x
    x = 360,040,154.55/21,541.69
  6. Step 6: Final answer
    x = 16,713.64

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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.