Home / 13,638.02-20,459.36-4,276.24

Finding the Fourth Proportional to 13,638.02, 20,459.36 and 4,276.24

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Solution

The fourth proportional to 13,638.02, 20,459.36 and 4,276.24 is: 6,415.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.02 : 20,459.36 = 4,276.24 : x
  2. Step 2: Convert to fraction form
    13,638.02/20,459.36 = 4,276.24/x
  3. Step 3: Cross multiply
    13,638.02x = 20,459.36 × 4,276.24
  4. Step 4: Simplify right side
    13,638.02x = 87,489,133.61
  5. Step 5: Solve for x
    x = 87,489,133.61/13,638.02
  6. Step 6: Final answer
    x = 6,415.09

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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.