Home / 20,486.16-30,729.45-13,510.86

Finding the Fourth Proportional to 20,486.16, 30,729.45 and 13,510.86

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Solution

The fourth proportional to 20,486.16, 30,729.45 and 13,510.86 is: 20,266.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.16 : 30,729.45 = 13,510.86 : x
  2. Step 2: Convert to fraction form
    20,486.16/30,729.45 = 13,510.86/x
  3. Step 3: Cross multiply
    20,486.16x = 30,729.45 × 13,510.86
  4. Step 4: Simplify right side
    20,486.16x = 415,181,296.83
  5. Step 5: Solve for x
    x = 415,181,296.83/20,486.16
  6. Step 6: Final answer
    x = 20,266.43

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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.