Home / 13,537.02-20,300.39-5,420.09

Finding the Fourth Proportional to 13,537.02, 20,300.39 and 5,420.09

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Solution

The fourth proportional to 13,537.02, 20,300.39 and 5,420.09 is: 8,128.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,537.02 : 20,300.39 = 5,420.09 : x
  2. Step 2: Convert to fraction form
    13,537.02/20,300.39 = 5,420.09/x
  3. Step 3: Cross multiply
    13,537.02x = 20,300.39 × 5,420.09
  4. Step 4: Simplify right side
    13,537.02x = 110,029,939.15
  5. Step 5: Solve for x
    x = 110,029,939.15/13,537.02
  6. Step 6: Final answer
    x = 8,128.08

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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.