Home / 20,775.08-31,127.16-11,422.93

Finding the Fourth Proportional to 20,775.08, 31,127.16 and 11,422.93

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Solution

The fourth proportional to 20,775.08, 31,127.16 and 11,422.93 is: 17,114.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.08 : 31,127.16 = 11,422.93 : x
  2. Step 2: Convert to fraction form
    20,775.08/31,127.16 = 11,422.93/x
  3. Step 3: Cross multiply
    20,775.08x = 31,127.16 × 11,422.93
  4. Step 4: Simplify right side
    20,775.08x = 355,563,369.78
  5. Step 5: Solve for x
    x = 355,563,369.78/20,775.08
  6. Step 6: Final answer
    x = 17,114.90

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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.