Home / 13,689.36-20,534.07-4,455.36

Finding the Fourth Proportional to 13,689.36, 20,534.07 and 4,455.36

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Solution

The fourth proportional to 13,689.36, 20,534.07 and 4,455.36 is: 6,683.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.36 : 20,534.07 = 4,455.36 : x
  2. Step 2: Convert to fraction form
    13,689.36/20,534.07 = 4,455.36/x
  3. Step 3: Cross multiply
    13,689.36x = 20,534.07 × 4,455.36
  4. Step 4: Simplify right side
    13,689.36x = 91,486,674.12
  5. Step 5: Solve for x
    x = 91,486,674.12/13,689.36
  6. Step 6: Final answer
    x = 6,683.05

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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.