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Finding the Fourth Proportional to 13,603.59, 20,407.05 and 4,839.39

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Solution

The fourth proportional to 13,603.59, 20,407.05 and 4,839.39 is: 7,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.59 : 20,407.05 = 4,839.39 : x
  2. Step 2: Convert to fraction form
    13,603.59/20,407.05 = 4,839.39/x
  3. Step 3: Cross multiply
    13,603.59x = 20,407.05 × 4,839.39
  4. Step 4: Simplify right side
    13,603.59x = 98,757,673.70
  5. Step 5: Solve for x
    x = 98,757,673.70/13,603.59
  6. Step 6: Final answer
    x = 7,259.68

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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.