Home / 20,343.05-30,561.40-14,434.61

Finding the Fourth Proportional to 20,343.05, 30,561.40 and 14,434.61

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Solution

The fourth proportional to 20,343.05, 30,561.40 and 14,434.61 is: 21,685.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.05 : 30,561.40 = 14,434.61 : x
  2. Step 2: Convert to fraction form
    20,343.05/30,561.40 = 14,434.61/x
  3. Step 3: Cross multiply
    20,343.05x = 30,561.40 × 14,434.61
  4. Step 4: Simplify right side
    20,343.05x = 441,141,755.29
  5. Step 5: Solve for x
    x = 441,141,755.29/20,343.05
  6. Step 6: Final answer
    x = 21,685.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.