Home / 13,663.47-20,498.09-4,428.75

Finding the Fourth Proportional to 13,663.47, 20,498.09 and 4,428.75

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Solution

The fourth proportional to 13,663.47, 20,498.09 and 4,428.75 is: 6,644.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.47 : 20,498.09 = 4,428.75 : x
  2. Step 2: Convert to fraction form
    13,663.47/20,498.09 = 4,428.75/x
  3. Step 3: Cross multiply
    13,663.47x = 20,498.09 × 4,428.75
  4. Step 4: Simplify right side
    13,663.47x = 90,780,893.94
  5. Step 5: Solve for x
    x = 90,780,893.94/13,663.47
  6. Step 6: Final answer
    x = 6,644.06

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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.