Home / 43,020.33-64,528.20-13,434.78

Finding the Fourth Proportional to 43,020.33, 64,528.20 and 13,434.78

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Solution

The fourth proportional to 43,020.33, 64,528.20 and 13,434.78 is: 20,151.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,020.33 : 64,528.20 = 13,434.78 : x
  2. Step 2: Convert to fraction form
    43,020.33/64,528.20 = 13,434.78/x
  3. Step 3: Cross multiply
    43,020.33x = 64,528.20 × 13,434.78
  4. Step 4: Simplify right side
    43,020.33x = 866,922,170.80
  5. Step 5: Solve for x
    x = 866,922,170.80/43,020.33
  6. Step 6: Final answer
    x = 20,151.45

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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.