Home / 21,995.57-30,348.63-12,435.66

Finding the Fourth Proportional to 21,995.57, 30,348.63 and 12,435.66

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Solution

The fourth proportional to 21,995.57, 30,348.63 and 12,435.66 is: 17,158.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.57 : 30,348.63 = 12,435.66 : x
  2. Step 2: Convert to fraction form
    21,995.57/30,348.63 = 12,435.66/x
  3. Step 3: Cross multiply
    21,995.57x = 30,348.63 × 12,435.66
  4. Step 4: Simplify right side
    21,995.57x = 377,405,244.15
  5. Step 5: Solve for x
    x = 377,405,244.15/21,995.57
  6. Step 6: Final answer
    x = 17,158.24

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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.