Home / 13,685.49-20,537.55-4,921.29

Finding the Fourth Proportional to 13,685.49, 20,537.55 and 4,921.29

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Solution

The fourth proportional to 13,685.49, 20,537.55 and 4,921.29 is: 7,385.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.49 : 20,537.55 = 4,921.29 : x
  2. Step 2: Convert to fraction form
    13,685.49/20,537.55 = 4,921.29/x
  3. Step 3: Cross multiply
    13,685.49x = 20,537.55 × 4,921.29
  4. Step 4: Simplify right side
    13,685.49x = 101,071,239.44
  5. Step 5: Solve for x
    x = 101,071,239.44/13,685.49
  6. Step 6: Final answer
    x = 7,385.28

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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.