Home / 13,681.05-20,521.58-3,292.80

Finding the Fourth Proportional to 13,681.05, 20,521.58 and 3,292.80

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Solution

The fourth proportional to 13,681.05, 20,521.58 and 3,292.80 is: 4,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.05 : 20,521.58 = 3,292.80 : x
  2. Step 2: Convert to fraction form
    13,681.05/20,521.58 = 3,292.80/x
  3. Step 3: Cross multiply
    13,681.05x = 20,521.58 × 3,292.80
  4. Step 4: Simplify right side
    13,681.05x = 67,573,390.86
  5. Step 5: Solve for x
    x = 67,573,390.86/13,681.05
  6. Step 6: Final answer
    x = 4,939.20

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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.