Home / 20,484.12-30,750.72-13,890.30

Finding the Fourth Proportional to 20,484.12, 30,750.72 and 13,890.30

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Solution

The fourth proportional to 20,484.12, 30,750.72 and 13,890.30 is: 20,852.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.12 : 30,750.72 = 13,890.30 : x
  2. Step 2: Convert to fraction form
    20,484.12/30,750.72 = 13,890.30/x
  3. Step 3: Cross multiply
    20,484.12x = 30,750.72 × 13,890.30
  4. Step 4: Simplify right side
    20,484.12x = 427,136,726.02
  5. Step 5: Solve for x
    x = 427,136,726.02/20,484.12
  6. Step 6: Final answer
    x = 20,852.09

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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.