Home / 13,913.38-20,871.28-3,525.13

Finding the Fourth Proportional to 13,913.38, 20,871.28 and 3,525.13

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Solution

The fourth proportional to 13,913.38, 20,871.28 and 3,525.13 is: 5,288.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.38 : 20,871.28 = 3,525.13 : x
  2. Step 2: Convert to fraction form
    13,913.38/20,871.28 = 3,525.13/x
  3. Step 3: Cross multiply
    13,913.38x = 20,871.28 × 3,525.13
  4. Step 4: Simplify right side
    13,913.38x = 73,573,870.91
  5. Step 5: Solve for x
    x = 73,573,870.91/13,913.38
  6. Step 6: Final answer
    x = 5,288.00

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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.