Home / 20,307.33-28,022.21-11,353.59

Finding the Fourth Proportional to 20,307.33, 28,022.21 and 11,353.59

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Solution

The fourth proportional to 20,307.33, 28,022.21 and 11,353.59 is: 15,666.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.33 : 28,022.21 = 11,353.59 : x
  2. Step 2: Convert to fraction form
    20,307.33/28,022.21 = 11,353.59/x
  3. Step 3: Cross multiply
    20,307.33x = 28,022.21 × 11,353.59
  4. Step 4: Simplify right side
    20,307.33x = 318,152,626.47
  5. Step 5: Solve for x
    x = 318,152,626.47/20,307.33
  6. Step 6: Final answer
    x = 15,666.89

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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.