Home / 13,931.34-20,895.09-5,165.04

Finding the Fourth Proportional to 13,931.34, 20,895.09 and 5,165.04

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Solution

The fourth proportional to 13,931.34, 20,895.09 and 5,165.04 is: 7,746.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.34 : 20,895.09 = 5,165.04 : x
  2. Step 2: Convert to fraction form
    13,931.34/20,895.09 = 5,165.04/x
  3. Step 3: Cross multiply
    13,931.34x = 20,895.09 × 5,165.04
  4. Step 4: Simplify right side
    13,931.34x = 107,923,975.65
  5. Step 5: Solve for x
    x = 107,923,975.65/13,931.34
  6. Step 6: Final answer
    x = 7,746.85

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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.