Home / 13,515.05-20,169.30-12,038.83

Finding the Fourth Proportional to 13,515.05, 20,169.30 and 12,038.83

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Solution

The fourth proportional to 13,515.05, 20,169.30 and 12,038.83 is: 17,966.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.05 : 20,169.30 = 12,038.83 : x
  2. Step 2: Convert to fraction form
    13,515.05/20,169.30 = 12,038.83/x
  3. Step 3: Cross multiply
    13,515.05x = 20,169.30 × 12,038.83
  4. Step 4: Simplify right side
    13,515.05x = 242,814,768.64
  5. Step 5: Solve for x
    x = 242,814,768.64/13,515.05
  6. Step 6: Final answer
    x = 17,966.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.