Home / 20,606.34-28,436.77-11,174.91

Finding the Fourth Proportional to 20,606.34, 28,436.77 and 11,174.91

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Solution

The fourth proportional to 20,606.34, 28,436.77 and 11,174.91 is: 15,421.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.34 : 28,436.77 = 11,174.91 : x
  2. Step 2: Convert to fraction form
    20,606.34/28,436.77 = 11,174.91/x
  3. Step 3: Cross multiply
    20,606.34x = 28,436.77 × 11,174.91
  4. Step 4: Simplify right side
    20,606.34x = 317,778,252.77
  5. Step 5: Solve for x
    x = 317,778,252.77/20,606.34
  6. Step 6: Final answer
    x = 15,421.38

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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.