Home / 20,189.23-30,256.08-10,307.68

Finding the Fourth Proportional to 20,189.23, 30,256.08 and 10,307.68

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Solution

The fourth proportional to 20,189.23, 30,256.08 and 10,307.68 is: 15,447.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.23 : 30,256.08 = 10,307.68 : x
  2. Step 2: Convert to fraction form
    20,189.23/30,256.08 = 10,307.68/x
  3. Step 3: Cross multiply
    20,189.23x = 30,256.08 × 10,307.68
  4. Step 4: Simplify right side
    20,189.23x = 311,869,990.69
  5. Step 5: Solve for x
    x = 311,869,990.69/20,189.23
  6. Step 6: Final answer
    x = 15,447.34

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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.