Home / 13,913.37-20,875.19-6,520.23

Finding the Fourth Proportional to 13,913.37, 20,875.19 and 6,520.23

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Solution

The fourth proportional to 13,913.37, 20,875.19 and 6,520.23 is: 9,782.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.37 : 20,875.19 = 6,520.23 : x
  2. Step 2: Convert to fraction form
    13,913.37/20,875.19 = 6,520.23/x
  3. Step 3: Cross multiply
    13,913.37x = 20,875.19 × 6,520.23
  4. Step 4: Simplify right side
    13,913.37x = 136,111,007.49
  5. Step 5: Solve for x
    x = 136,111,007.49/13,913.37
  6. Step 6: Final answer
    x = 9,782.75

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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.