Home / 20,837.08-31,247.20-7,686.54

Finding the Fourth Proportional to 20,837.08, 31,247.20 and 7,686.54

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Solution

The fourth proportional to 20,837.08, 31,247.20 and 7,686.54 is: 11,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.08 : 31,247.20 = 7,686.54 : x
  2. Step 2: Convert to fraction form
    20,837.08/31,247.20 = 7,686.54/x
  3. Step 3: Cross multiply
    20,837.08x = 31,247.20 × 7,686.54
  4. Step 4: Simplify right side
    20,837.08x = 240,182,852.69
  5. Step 5: Solve for x
    x = 240,182,852.69/20,837.08
  6. Step 6: Final answer
    x = 11,526.70

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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.