Home / 20,434.47-30,609.18-19,729.50

Finding the Fourth Proportional to 20,434.47, 30,609.18 and 19,729.50

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Solution

The fourth proportional to 20,434.47, 30,609.18 and 19,729.50 is: 29,553.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.47 : 30,609.18 = 19,729.50 : x
  2. Step 2: Convert to fraction form
    20,434.47/30,609.18 = 19,729.50/x
  3. Step 3: Cross multiply
    20,434.47x = 30,609.18 × 19,729.50
  4. Step 4: Simplify right side
    20,434.47x = 603,903,816.81
  5. Step 5: Solve for x
    x = 603,903,816.81/20,434.47
  6. Step 6: Final answer
    x = 29,553.19

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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.