Home / 20,235.11-27,922.40-11,281.77

Finding the Fourth Proportional to 20,235.11, 27,922.40 and 11,281.77

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Solution

The fourth proportional to 20,235.11, 27,922.40 and 11,281.77 is: 15,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235.11 : 27,922.40 = 11,281.77 : x
  2. Step 2: Convert to fraction form
    20,235.11/27,922.40 = 11,281.77/x
  3. Step 3: Cross multiply
    20,235.11x = 27,922.40 × 11,281.77
  4. Step 4: Simplify right side
    20,235.11x = 315,014,038.24
  5. Step 5: Solve for x
    x = 315,014,038.24/20,235.11
  6. Step 6: Final answer
    x = 15,567.70

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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.