Home / 21,995.60-30,346.79-12,434.56

Finding the Fourth Proportional to 21,995.60, 30,346.79 and 12,434.56

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Solution

The fourth proportional to 21,995.60, 30,346.79 and 12,434.56 is: 17,155.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.60 : 30,346.79 = 12,434.56 : x
  2. Step 2: Convert to fraction form
    21,995.60/30,346.79 = 12,434.56/x
  3. Step 3: Cross multiply
    21,995.60x = 30,346.79 × 12,434.56
  4. Step 4: Simplify right side
    21,995.60x = 377,348,843.02
  5. Step 5: Solve for x
    x = 377,348,843.02/21,995.60
  6. Step 6: Final answer
    x = 17,155.66

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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.