Home / 13,935.80-20,903.77-3,547.55

Finding the Fourth Proportional to 13,935.80, 20,903.77 and 3,547.55

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Solution

The fourth proportional to 13,935.80, 20,903.77 and 3,547.55 is: 5,321.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.80 : 20,903.77 = 3,547.55 : x
  2. Step 2: Convert to fraction form
    13,935.80/20,903.77 = 3,547.55/x
  3. Step 3: Cross multiply
    13,935.80x = 20,903.77 × 3,547.55
  4. Step 4: Simplify right side
    13,935.80x = 74,157,108.37
  5. Step 5: Solve for x
    x = 74,157,108.37/13,935.80
  6. Step 6: Final answer
    x = 5,321.34

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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.