Home / 13,985.84-20,979.74-4,625.48

Finding the Fourth Proportional to 13,985.84, 20,979.74 and 4,625.48

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Solution

The fourth proportional to 13,985.84, 20,979.74 and 4,625.48 is: 6,938.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.84 : 20,979.74 = 4,625.48 : x
  2. Step 2: Convert to fraction form
    13,985.84/20,979.74 = 4,625.48/x
  3. Step 3: Cross multiply
    13,985.84x = 20,979.74 × 4,625.48
  4. Step 4: Simplify right side
    13,985.84x = 97,041,367.78
  5. Step 5: Solve for x
    x = 97,041,367.78/13,985.84
  6. Step 6: Final answer
    x = 6,938.54

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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.