Home / 20,307.08-28,021.86-11,353.34

Finding the Fourth Proportional to 20,307.08, 28,021.86 and 11,353.34

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Solution

The fourth proportional to 20,307.08, 28,021.86 and 11,353.34 is: 15,666.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.08 : 28,021.86 = 11,353.34 : x
  2. Step 2: Convert to fraction form
    20,307.08/28,021.86 = 11,353.34/x
  3. Step 3: Cross multiply
    20,307.08x = 28,021.86 × 11,353.34
  4. Step 4: Simplify right side
    20,307.08x = 318,141,704.01
  5. Step 5: Solve for x
    x = 318,141,704.01/20,307.08
  6. Step 6: Final answer
    x = 15,666.54

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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.